Abu Huraira (RA) reported Allah’s Messenger (peace be upon him) as
saying: He who called (people) to righteousness, there would be reward
(assured) for him like the rewards of those who adhered to it, without
their rewards being diminished in any respect. And he who called
(people) to error, he shall have to carry (the burden) of its sin, like
those who committed it, without their sins being diminished in any
respect.
(Sahih Muslim, Book 47, Hadith 30)
The Book of Knowledge – Sunnah.com – Sayings and Teachings of Prophet Muhammad (صلى الله عليه و سلم)