Sunan Ibn Majah 204

Abd al-Warith ibn Abd al-Samad ibn Abd al-Warith reported to us: My father reported to me: My father reported to me, from Ayyub, from Muhammad ibn Sirin, from Abu Hurairah, who said: A man came to the Prophet (Allah bless him and grant him peace), who urged people to give charity for him. A man said, ‘I have such-and-such.’ No one remained in the gathering without giving something, little or much. The Messenger of Allah said, ‘Whoever initiates a good practice that is followed will have its full reward and the like of the reward of those who follow it, without their rewards being diminished at all. Whoever initiates a bad practice that is followed will bear its full burden and the like of the burdens of those who follow it, without their burdens being diminished at all.’