Sunan Ibn Majah, Chapter: The Chapters of Establishing the Prayer and the Sunnah Regarding Them

that they went on the campaign of Salasil, but no battle took place; they only took up their positions. Then they came back to Muawiyah, and Abu Ayyub and Uqbah bin Amir were with him. Asim said: "O Abu Ayyub, we have missed out on Jihad this year, and we were told that whoever prays in the four mosques will be forgiven his sins." He said: "O son of my brother, shall I not tell you of something easier than that? I heard the Messenger of Allah (saw) say: 'Whoever performs ablution as he has been commanded, and prays as he has been commanded, will be forgiven his previous (bad) deeds.'" He said: "(Did he not say it) like that, O Uqbah?" He said: "Yes." Sahih