Ma'dan bin Abu Talhah AI-Ya'muri said: "I met Thawban and said to him: 'Tell me a Hadith that Allah may benefit me thereby.' But he remained silent.Then I said the same and he remained silent. That happened three times, Then he said to me: 'You should prostrate to Allah for I heard the Messenger of Allah say: "No one prostrates to Allah but Allah will raise him one degree in status thereby and will erase one of his sins." Ma'dan said: "Then I met Abu' Darda' and asked him the same question, and he gave a similar answer." (Sahih)