(17) باب مَا يُكْرَهُ مِنَ الإِطْنَابِ فِي الْمَدْحِ وَلْيَقُلْ مَا يَعْلَمُ
Narrated Abu Musa Al-Ash`ari:
The Prophet (ﷺ) heard someone praising another and exaggerating in his praise. The Prophet (ﷺ) said, "You have ruined or cut the man's back (by praising him so much).
Reference: Sahih al-Bukhari 2663
In-book reference: Book 52, Hadith 27
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 3, Book 48, Hadith 831