It was narrated that Abu Hurairah said:"The Messenger of Allah (ﷺ) promised us (a) battle expedition (in) India. If I live to see that, I will expend myself and my wealth in it. If I am killed, I will be one of the best of the martyrs, and if I come back, I will be Abu Hurairah Al-Muharrar." [1] [1] Al-Muharrar: The one freed (from the Fire)

English translation · Sunan an-Nasa'i