(153) بَابُ مَا جَاءَ فِي التَّمَادُحِ
Abu Bakr reported that a man was mentioned in the presence of theProphet, may Allah bless him and grant him peace, and someone praised him.The Prophet, may Allah bless him and grant him peace, said, "Woe to you!You have cut off the head of your companion!" and he repeated that severaltimes. He went on, "If one of you must praise someone, he should say, 'Iconsider that so-and-so is such-and-such.' Allah is the One who will takeaccount of him if he thinks that he is indeed like that, No one can appropriateAllah's right to attest to someone's character."
Reference: Al-Adab Al-Mufrad 333
In-book reference: Book 16, Hadith 1
English translation: Book 16, Hadith 333