I heard Humran bin Aban tell Abu Burdah in the mosque of Basrah, when I was standing next to him, that he heard ʿUthman bin ʿAffan ؓ narrating from the Prophet ﷺ that he said: ʿWhoever does wudoo’ properly as enjoined by Allah, may He be glorified and exalted, the five prayers will be an expiation for whatever comes in between them.ʿ
عَنِ النَّبِيِّ ﷺ أَنَّهُ قَالَ مَنْ أَتَمَّ الْوُضُوءَ كَمَا أَمَرَهُ اللهُ ﷻ فَالصَّلَوَاتُ الْخَمْسُ كَفَّارَاتٌ لِمَا بَيْنَهُنَّ