The Prophet Muhammad (S): Whoever establishes a good habitual practice that people follow even after him, he will get his own reward for it as well as the like of their reward for performing it, without any decrease in their reward thereof. And whoever establishes an evil habitual practice that is followed by people after him, he will be responsible for the burden of his own sin as well as the burden of their sins, without any decrease in their burdens thereof. Kanz al-'Ummāl fī Sunan al-Aqwāl wal-Af'āl