Mishkat al-Masabih 1882

Abu Dharr said: He asked Uthman for permission to enter, and Uthman granted it. Abu Dharr had his staff in his hand. Uthman said, ‘Kaʿb, Abd al-Rahman has died and left wealth. What do you think about it?’ He replied, ‘If he paid Allah’s due from it, there is no harm in it.’ Abu Dharr raised his staff, struck Kaʿb, and said, ‘I heard the Messenger of Allah ﷺ say, “I would not like to have gold equal to this mountain, spend it and have it accepted from me, yet leave behind six uqiyyas of it.”’ He adjured Uthman by Allah three times: ‘Did you hear him say this?’ He replied, ‘Yes.’ Ahmad transmitted it.