Sunan Abi Dawud
Hadith #4805
Abu Bakrah said that when a man praised another man in his face in the presence of the Prophet (ﷺ) said :You have beheaded your friend (saying it three times). He then said : One who cannot help expressing praise of his companion, should say : I consider him such and such (as he intends to say), but I do not declare him pure with Allah