It is narrated from Hazrat Hudhaifa (may Allah be pleased with him) that once during the blessed era of the Holy Prophet (peace and blessings be upon him), a person asked people for something. The people hesitated, then one man gave him something, and after that, everyone started giving him. Upon this, the Holy Prophet (peace and blessings be upon him) said: Whoever introduces a good practice in Islam, he will have its reward and the reward of those who act upon it after him, without their rewards being diminished in the least. And whoever introduces a bad practice in Islam, he will bear its sin and the sin of those who act upon it after him, without their sins being diminished in the least.