In recent history, many other religions have claimed to have "monastic" elements, including Taoism, Buddhism, Hinduism,and Jainism, though the expressions differ considerably. Those pursuing a monastic life are usually called monks or brethren (brothers) if male, and nuns or sisters if female. Both monks and nuns may also be called monastics.
After the death of the Buddha, the Buddhist monkastic order developed into a primarily cenobitic movement. The practice of living communally during the rainy vassa season, prescribed by the Buddha, gradually grew to encompass a settled monkastic life centered on life in a community of practitioners. Most of the modern disciplinary rules followed by bhikkhus and bhikkhunis—the Patimokkha—relate to such an existence, prescribing in great detail proper methods for living and relating in a community of bhikkhus or bhikkhunis. The number of rules observed varies with the order; Theravada bhikkhus follow around 227 rules. There are a larger number of rules specified for bhikkhunis (nuns).
Buddhist monkasticism with its tradition of councils, missions, and being a source of knowledge and literacy spread from India to the Middle East and eventually west, with Christian monkasticism following in its footsteps in the areas where Emperor Ashoka sent missions.
The Buddhist monkastic order consists of the male bhikkhu assembly and the female bhikkhuni assembly. Initially consisting only of males, it grew to include females after the Buddha's stepmother, Mahaprajapati, asked for and received permission to live as an ordained practitioner.
Bhikkhus and bhikkhunis are expected to fulfill a variety of roles in the Buddhist community. First and foremost, they are expected to preserve the doctrine and discipline now known as Buddhism. They are also expected to provide a living example for the laity, and to serve as a "field of merit" for lay followers—providing laymen and women with the opportunity to earn merit by giving gifts and support to the bhikkhuss. In return for the support of the laity, bhikkhus and bhikkhunis are expected to live an austere life focused on the study of Buddhist doctrine, the practice of meditation, and the observance of good moral character.
A bhikkhu in Pali or Bhikshu in Sanskrit, first ordains as a Samanera (novice) for a year or more. Novices often ordain at a very young age, but generally no younger than eight. Samaneras live according to the Ten Precepts, but are not responsible for living by the full set of monkastic rules. Higher ordination, conferring the status of a full Bhikkhu, is usually given only to men who are aged 20 or older. Bhikkhunis follow a similar progression, but are required to live as Samaneras for a longer periods of time- typically five years.
The disciplinary regulations for bhikkhus and bhikkhunis are intended to create a life that is simple and focused, rather than one of deprivation or severe asceticism. Celibacy is of primary importance in monkastic discipline.
Monasticism in Christianity provided the origins of the words "monk" and "monastery" which comprises several diverse forms of religious living that are in response to the call of Jesus of Nazareth to follow him. It began to develop early in the history of the Church, modeled upon Scriptural examples and ideals, including those in the Old Testament, but not mandated as an institution in the Scriptures. It has come to be regulated by religious rules (e.g. the Rule of St Basil, the Rule of St Benedict) and, in modern times, the Church law of the respective Christian denominations that have forms of monastic living.
Christian monasticism is a way of religious living (also called the "counsels of perfection") that is being embraced as a vocation from God out of a desire to attain eternal life in his presence. During his Sermon on the Mount on the Beatitudes (the right way of living according to the law of God), Jesus exhorted the large crowd listening to him to be "perfect as your heavenly Father is perfect" (). When speaking to his men , God also extended an invitation to celibacy to those "to whom it has been given" (); and when asked what else is required in addition to observing the Commandments in order to "enter into eternal life", he advised to sell all earthly possessions in favour of the poor and to follow him, "if you wish to be perfect" (cf. = = ).
Already in the New Testament there is evidence of Christian monastic living, namely the service rendered by the Widows and the Virgins. Eventually, first in Syria and then in Egypt, Christians began to feel called also to eremitic monkastic living (in the spirit of the "Desert Theology" of the Old Testament for the purpose of spiritual renewal and return to God). Saint Anthony the Great is cited by Athanasius as one of these early "Hermit monks". Starting in Egypt, this gave rise to cenobitic monasticism as it is mainly known in the West. Especially in the Middle East eremitic monasticism continued to be very common until the decline of Syrian Christianity in the late Middle Ages.
But not everybody is fit for solitary life, and numerous cases of hermits becoming mentally unstable are reported. The need for some form of organized spiritual guidance was obvious; and around 318 Saint Pachomius started to organize his many followers in what was to become the first Christian cenobitic monkastery. Soon, similar institutions were established throughout the Egyptian desert as well as the rest of the eastern half of the Roman Empire. Notable monasteries of the East include:
In the West, the most significant development occurred when the rules for monastic communities were written, the Rule of St Basil being credited with having been the first. The precise dating of the Rule of the Master is problematic; but it has been argued on internal grounds that it antedates the so-called Rule of Saint Benedict created by Benedict of Nursia for his monastery in Monte Cassino, Italy (c. 529), and the other monasteries he himself had founded (cf. Order of St Benedict). It would become the most common rule throughout the Middle Ages and is still in use today. The Augustinian Rule, due to its brevity, has been adopted by various communities, chiefly the Canons Regular.
Around the 12th century, the Franciscan, Carmelite, Dominican, and Augustinian mendicant orders chose to live in city convents among the people instead of secluded in monasteries.
Today new expressions of Christian monasticism, many of which ecumenical, are developing in places such as the Bose Monastic Community in Italy, the Monastic Fraternities of Jerusalem throughout Europe, and the Taizé Community in France, and the mainly Evangelical Protestant New Monasticism movement of America.
A Sadhu's vow of renunciation typically forbids him from:
Dervishes — initiates of Sufi orders — believe that love is a projection of the essence of God to the universe. Many of the dervishes are mendicant ascetics who have taken the vow of poverty. Though some of them are beggars by choice, others work in common professions; many Egyptian Qadirites, for example, are fishermen.
All genuine dervish brotherhoods trace their origins from two of the close companions of Muhammad, Ali ibn Abi Talib and Abu Bakr. They differ from spiritual brotherhoods of Christianity in that they usually do not live together in a 'monastery' setting; it is actually a stipulation that they have families, and earn an ethical living.
Whirling dance, which is the practice of the Mevlevi order in Turkey, is just one of the physical methods to try to reach religious ecstasy (majdhb) and connection with Allah. Rif'ai, in their mystical states, apparently skewer themselves without engendering any harm. Other groups include the Shadhili, a gnosis based order who practice the 'hadra' or 'presence', a dance-like breathing exercise involving the repetition of divine names. All genuine brotherhoods and subgroups chant verses of Qur'an, and must follow the sharia, or Islamic sacred law.
Traditionally monks in Islam have been known as fakirs. This term has also been applied to Hindu monks.