Sahih Muslim
The Book Pertaining to Piety and Softening of Hearts (Kitab Al-Zuhd wa Al-Raqaiq)
Book Number: 042 / Hadith Number: 7141
Abu Musa reported Allah's Messenger (may peace be upon him) saw a person lauding another person or praising him too much. Thereupon he said: You killed him, or you sliced the back of a person.