It is narrated from Hazrat Jarir (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: Whoever introduces a good practice in Islam, he will have the reward of that act and also the reward of those who act upon it after him, and nothing will be diminished from their rewards. And whoever introduces a bad practice in Islam, he will bear its sin and also the sin of those who act upon it after him, and nothing will be diminished from their sins. The previous hadith is also narrated through this second chain.