The Messenger of Allah (ﷺ) said: Does the man who lifts his head before the Imam not fear that Allah may change his face into that of an ass?
Sahih Muslim Book 4, Hadith 126
← Previous Hadith The Messenger of Allah (ﷺ) said: Does the man who lifts his head ahead of the Imam (from prostration) not fear that Allah may change his head into the head of an ass?

Sahih Muslim Book 4, Hadith 125 Next Hadith → " Allah may make his face like the face of an ass."

Sahih Muslim Book 4, Hadith 127