Ma'dan (may Allah have mercy on him) says that once I requested Hazrat Thawban (may Allah be pleased with him) to narrate to me a hadith by which Allah may grant me benefit. He said: I heard the Prophet Muhammad (peace and blessings be upon him) say: Whoever performs one prostration for the pleasure of Allah, Allah will raise him one degree because of it and forgive one of his sins.
Hadith Referenceمسند احمد / مسند الأنصار رضي الله عنهم / 22411