What is the meaning of Inquilab Zindabad and in what language is it? Who did use it first in India and when?

Inquilab Zindabad implies Long Live the Rebellion.

This motto was authored by the Urdu artist, Indian political dissident and a Leader of Indian National Congress Maulana Hasrat Mohani in 1921.IT was promoted by Bhagat Singh (1907–1931) during the last part of the 1920s through his talks and writings.it was likewise the official trademark of the Hindustan Socialist Republican Association,as well as a trademark of the All India Azad Muslim Conference.[9] In April 1929, this trademark was raised by Bhagat Singh and his partner B. K. Dutt who had yelled this in the wake of bombarding the Central Legislative Assembly in Delhi. Afterward, without precedent for an open court, this trademark was brought up in June 1929 as a feature of their joint assertion at the High Court in Delhi.Since at that point, it got one of the energizing cries of the Indian freedom development. In Indian political books chronicling the autonomy development, a favorable to freedom opinion is frequently described by characters yelling this trademark.