Narrated from Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (blessings and peace of Allah be upon him) said: “The one who calls to true guidance will have a reward like the rewards of those who follow him without that detracting from their rewards in the slightest, and the one who calls to misguidance will have a burden of sin like that of those who follow him, without that detracting from their burden of sin in the slightest.” 

[Muslim 4831]