Hindavi (हिन्दवी, ہندوی), Hindawi, or Hindvi is the mother language of modern standard Hindi and Urdu. It was formed as a result of the intermingling of Persian loanwords with the native Khariboli language spoken in Delhi, the cultural capital of the northern India. For this reason, Amir Khusro referred to this language of his writings as Dahlavi (meaning of Delhi) or Hindavi (meaning of India). During this period, the language was used by Sufis in promulgating their message across India. After the advent of the Mughals in India, the Hindavi language acquired more Persian loanwords and hence, Rekhta (meaning mixture) and Hindi (meaning Indian) became popular names for the same language, until the eighteenth century. Urdu, as a name for the language arose around 1780. During the British Raj, the term "Hindustani" came into use as a result of British officials identifying the country's former name as Hindustan. In 1796, John Borthwick Gilchrist published a "A Grammar of the Hindoostanee Language".
Persian texts refer to it
UNESCO refers to it as Zuban-e-Hindawi
TDIL, Govt. of India refers to it here
Referred in a Springer publication
The battle for Shivaji ; Plans for a memorial on the Maratha hero run into trouble as political parties jostle for gains.
Jul 06, 2009; If New York has the Statue of Liberty, Mumbai will soon be able to boast of a towering Chhatrapati Shivaji Maharaj memorial....