In the name of Allah, Most Gracious, Most Merciful.
Abu Hurairah (May Allah be pleased with him) reported: Messenger of Allah (May Allah exalt his mention and protect him from imperfection) said, “If anyone calls others to follow right guidance, his reward will be equivalent to those who follow him (in righteousness) without their reward being diminished in any respect, and if anyone invites others to follow error, the sin, will be equivalent to that of the people who follow him (in sinfulness) without their sins being diminished in any respect”. (Muslim)
Commentary: ‘Invitation’ and ‘Call’ stand to mean here that someone induces others to virtue or seduces to sin by means of his speech or action. We come to know from this Hadith that one who becomes a medium for either of them is given a reward or punishment respectively by Allah (SWT).
Riyaadiss-Saliheen (The Meadows of the Righteous)
By Imam An Nawawi
Chapiter 20, Page 64, No 174