Volume 8, Book 73, Number 183:
Narrated Abu Bakra:
A man praised another man in front of the Prophet. The Prophet said thrice, “Wailaka (Woe on
you) ! You have cut the neck of your brother!” The Prophet 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.)”.
Volume 8 – 1372 / 1700
SAHIH BUKHARI VOLUME 8 > BOOK 73: GOOD MANNERS AND FORM (AL-ADAB)