Mukhariq (may Allah have mercy on him) says: I passed by Sayyiduna Abu Dharr (may Allah be pleased with him) at al-Rabadhah while I was intending Hajj. I entered his house and found him praying a prayer with light standing, as long as "Indeed, We have granted you al-Kawthar" [Surah al-Kawthar: 1] and "When the help of Allah and the victory come" [Surah al-Nasr: 1], but doing much bowing and prostration. When he finished the prayer, I said: I saw that you keep the standing short and do much bowing and prostration? He said: I heard the Messenger of Allah (peace and blessings be upon him) say: "No servant prostrates once to Allah or bows once, but that Allah wipes away a sin from him and raises him one degree."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4696