Silsilat al-Ahadith al-Sahihah

Abu Muneeb reports that Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) saw a young man performing a prayer with excessive length and asked: Who knows this young man? A man said: I know him. He said: If I had known him, I would have instructed him to perform more bowing (ruku) and prostration (sujood) instead of prolonging (the standing), because I heard the Messenger of Allah (peace and blessings be upon him) say: "When a servant stands for prayer, all his sins are placed upon his shoulders; when he bows or prostrates, his sins fall away from him."