Sunan an-Nasa'i 143
It was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) said:
"Shall I not tell you of that by means of which Allah erases sins and raises (people) in status? Doing Wudu' properly [1] even when it is inconvenient, taking a lot of steps to the Masjid, and waiting for one Salah after another. That is the Ribat for you, that is the Ribat for you, that is the Ribat for you."

[1] Isbagh Al-Wudu'
أَخْبَرَنَا قُتَيْبَةُ، عَنْ مَالِكٍ، عَنِ الْعَلاَءِ بْنِ عَبْدِ الرَّحْمَنِ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏
"‏ أَلاَ أُخْبِرُكُمْ بِمَا يَمْحُو اللَّهُ بِهِ الْخَطَايَا وَيَرْفَعُ بِهِ الدَّرَجَاتِ إِسْبَاغُ الْوُضُوءِ عَلَى الْمَكَارِهِ وَكَثْرَةُ الْخُطَا إِلَى الْمَسَاجِدِ وَانْتِظَارُ الصَّلاَةِ بَعْدَ الصَّلاَةِ فَذَلِكُمُ الرِّبَاطُ فَذَلِكُمُ الرِّبَاطُ فَذَلِكُمُ الرِّبَاطُ ‏"‏ ‏.‏