حَدَّثَنَا قُتَيْبَةُ، حَدَّثَنَا مَعْنُ بْنُ عِيسَى، عَنْ سَعِيدِ بْنِ السَّائِبِ، عَنْ نُوحِ بْنِ صَعْصَعَةَ، عَنْ يَزِيدَ بْنِ عَامِرٍ، قَالَ جِئْتُ وَالنَّبِيُّ صلى الله عليه وسلم فِي الصَّلاَةِ فَجَلَسْتُ وَلَمْ أَدْخُلْ مَعَهُمْ فِي الصَّلاَةِ - قَالَ - فَانْصَرَفَ عَلَيْنَا رَسُولُ اللَّهِ صلى الله عليه وسلم فَرَأَى يَزِيدَ جَالِسًا فَقَالَ ‏"‏ أَلَمْ تُسْلِمْ يَا يَزِيدُ ‏"‏ ‏.‏ قَالَ بَلَى يَا رَسُولَ اللَّهِ قَدْ أَسْلَمْتُ ‏.‏ قَالَ ‏"‏ فَمَا مَنَعَكَ أَنْ تَدْخُلَ مَعَ النَّاسِ فِي صَلاَتِهِمْ ‏"‏ ‏.‏ قَالَ إِنِّي كُنْتُ قَدْ صَلَّيْتُ فِي مَنْزِلِي وَأَنَا أَحْسِبُ أَنْ قَدْ صَلَّيْتُمْ ‏.‏ فَقَالَ ‏"‏إِذَا جِئْتَ إِلَى الصَّلاَةِ فَوَجَدْتَ النَّاسَ فَصَلِّ مَعَهُمْ وَإِنْ كُنْتَ قَدْ صَلَّيْتَ تَكُنْ لَكَ نَافِلَةً وَهَذِهِ مَكْتُوبَةً ‏"

Narrated Yazid ibn Amir

I came while the Prophet (ﷺ) was in the prayer, so I sat down and did not enter into the prayer with them. The Messenger of Allah (ﷺ) turned towards us and saw Yazid sitting, so he said, "Did you not pray, O Yazid?" He said, "Yes, O Messenger of Allah, I have indeed embraced Islam." He said, "What prevented you from entering into the prayer with the people?" He said, "I had already prayed in my house, and I thought that you had already prayed." So he said, "When you come to the prayer and find the people praying, then pray with them, and if you have already prayed, it will be a supererogatory prayer for you, and this one will be obligatory."