Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
ahmad-zuhd:2255ʿAbdullāh from my father > ʿAbd al-Ṣamad > Sallām > ʿImrān

[Machine] That Sa'id ibn al-Musayyib did not miss a prayer in congregation for forty years and he did not look at their backs nor did they meet him outside of the mosque.  

الزهد لأحمد:٢٢٥٥حَدَّثَنَا عَبْدُ اللَّهِ حَدَّثَنِي أَبِي حَدَّثَنَا عَبْدُ الصَّمَدِ حَدَّثَنَا سَلَّامٌ حَدَّثَنَا عِمْرَانُ

أَنَّ سَعْيدَ بْنَ الْمُسَيِّبِ لَمْ تَفُتْهُ صَلَاةٌ فِي جَمعٍ أَرْبَعِينَ سَنَةً وَلَمْ يَنْظُرْ فِي أَقْفِيَتِهِمْ وَلَمْ يَلْقَوْهُ خَارِجَيْنِ مِنَ الْمَسْجِدِ