The Messenger of Allah ﷺ said: Should I not suggest to you that by which Allah obliterates the sins and elevates the ranks (of a man). They (the hearers) said: Yes, Messenger of Allah. He said: Performing the ablution thoroughly despite odds, tranverside of more paces towards the mosque, and waiting for the next prayer after observing a prayer, and that is mindfulness. (Using translation from Muslim 251a)
أَنَّ رَسُولَ اللهِ ﷺ قَالَ أَلَا أَدُلُّكُمْ عَلَى مَا يَمْحُو اللهُ بِهِ الْخَطَايَا وَيَرْفَعُ بِهِ الدَّرَجَاتِ؟ قَالُوا بَلَى يَا رَسُولَ اللهِ قَالَ إِسْبَاغُ الْوُضُوءِ عَلَى الْمَكَارِهِ وَكَثْرَةُ الْخُطَا إِلَى الْمَسَاجِدِ وَانْتِظَارُ الصَّلَاةِ بَعْدَ الصَّلَاةِ فَذَلِكُمُ الرِّبَاطُ