The Prophet said: "Sins are expiated by well-performed ablution despite difficulties, increasing the number of steps one takes towards the mosque, (and waiting for the next prayer after prayer)."
أَنَّ النَّبِيَّ ﷺ قَالَ كَفَّارَاتُ الْخَطَايَا إِسْبَاغُ الْوُضُوءِ عَلَى الْمَكَارِهِ وَإِعْمَالُ الأَقْدَامِ إِلَى الْمَسَاجِدِ وَانْتِظَارُ الصَّلاَةِ بَعْدَ الصَّلاَةِ