Silsilat al-Ahadith al-Sahihah

It is narrated from Sayyiduna Abu Hurairah, may Allah be pleased with him, that the Messenger of Allah, peace and blessings be upon him, said: "The one who frequently repents is the one who guards the Duha prayer, and this is the Salat al-Awwabeen (the prayer of those who repent much)."