It was narrated from' Asim bin Sufyan Thaqafi that they went on the campaign of Salasil, but no battle took place; they only took up their positions. Then they came back to Mu'awiyah, and Abu Ayyub and 'Ugbah bin,Amir were with him. 'Asim said: "0 Abu Ayyub, we have missed out on Jihad this year, and we were told that whoever prays in the four Masjids will be forgiven his sins." He said: "0 son of my brother, shall I not tell you of something easier than that? I heard the Messenger of Allah 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, 0 'Uqbah?" He said: "Yes." (Hasan)