Mukhtasar Bukhari

Narrated Abu Sa'id Al-Khudri (may Allah be pleased with him): The Prophet (peace and blessings of Allah be upon him) said: "Do not speak ill of my companions. If any one of you were to spend gold equal to (the mountain of) Uhud (in the way of Allah), it would not equal a mudd or even half a mudd (of grain) given by them."