A man praised another man in front of the Prophet. The Prophet (ﷺ) said thrice, "Wailaka (Woe on you) !
You have cut the neck of your brother!" The Prophet (ﷺ) added, "If it is indispensable for anyone of you
to praise a person, then he should say, "I think that such-and-such person (is so-and-so), and Allah is
the one who will take his accounts (as he knows his reality) and none can sanctify anybody before
Allah (and that only if he knows well about that person.)".
Sahih al-Bukhari Book 78, Hadith 188