From Sahih Bukhari (Hadith 3403):
Narrated Abu Huraira:Allah's Messenger (ﷺ) said, "It was said to Bani Israel, Enter the gate (of the town) with humility (prostrating yourselves) and saying: "Repentance", but they changed the word and entered the town crawling on their buttocks and saying: "A wheat grain in the hair
Reference: Bukhari 3403