On the authority of Abu Hurairah (may Allah be pleased with him) who reported that Allah's Messenger (peace be upon him) said:
If anyone invites others to follow the error, his sin will be equivalent to those people who follow him without their sins being decreased in any way.
(Reported by Muslim)
1. The one who encourages a bad action and the one who does it will be equal in attaining its sin.
This Hadith was copied from