Abu Bakra reported,

A man praised another man in the presence of the Prophet ﷺ, so he said, "Woe to you, you have cut your companion's neck, you have cut your companion's neck," repeating it several times.Then he said, "If any of you must praise his brother, let him say, 'I reckon so-and-so to be such, and Allah is his reckoner, and I do not declare anyone pure before Allah. I reckon him to be thus and thus,' if he truly knows that of him."

عن أبي بكرة قال

أثنى رجل على رجل عند النبي ﷺ، فقال: ويلك قطعت عنق صاحبك قطعت عنق صاحبك مرارا، ثم قال: من كان منكم مادحا أخاه لا محالة، فليقل: أحسب فلانا، والله حسيبه، ولا أزكي على الله أحدا أحسبه كذا وكذا، إن كان يعلم ذلك منه.