At seventeen he married into a family of Bábís of the town of Ardikán, near Yazd, Iran. When news of the declaration of Bahá'u'lláh came, he accepted immediately and travelled throughout the Persian Empire teaching the new message.
He was a literate man, and earned his living by trading and writing for the illiterate as he travelled. He was known to collect letters that people wished to forward to Bahá'u'lláh, and also distributed tablets of Bahá'u'lláh where people received them.
He made his way to 'Akká, and became the first Bahá'í from outside of the city to see Bahá'u'lláh, returning on several occasions. When Haji Shah-Muhammad Manshadi was killed in 1880, Amín became the trustee of the Huqúqu'lláh.
In 1891 he was imprisoned for three years in Tihran and Qazvin, and during the time of `Abdu'l-Bahá he continued his travels, visiting 'Akká and Haifa on many occasions. In old age he settled down in Tihran.