I heard Humran b. Aban narrate to Abu Burda in this very mosque during the governorship of Bishr that 'Uthman b. Alfan said: The Messenger of Allah ﷺ observed: He who completed ablution as Allah, the Exalted, enjoined upon him, his obligatory prayers would be explatious (for his minor sins that he would commit) during (the interval) between them. This hadith is transmitted by Ibn Mu'adh, and in the hadith narrated by Ghundar, the words" during the governorship of Bishr" are omitted and there is no mention of the obligatory prayers.  

قَالَ رَسُولُ اللَّهِ ﷺ مَنْ أَتَمَّ الْوُضُوءَ كَمَا أَمَرَهُ اللَّهُ تَعَالَى فَالصَّلوَاتُ الْمَكْتُوبَاتُ كَفَّارَاتٌ لِمَا بَيْنَهُنَّ هَذَا حَدِيثُ ابْنِ مُعَاذٍ وَلَيْسَ فِي حَدِيثِ غُنْدَرٍ فِي إِمَارَةِ بِشْرٍ وَلاَ ذِكْرُ الْمَكْتُوبَاتِ