[Machine] I came to the Prophet (PBUH) and the prayer was established, so I sat down. After he finished praying, he asked me, "Are you not a Muslim?" I replied, "Yes, I am." He then asked, "What prevented you from praying with the people?" I said, "I prayed at home with my family." He told me, "Pray with the people even if you have already prayed with your family."  

أَتَيْتُ النَّبِيَّ ﷺ فَأُقِيمَتِ الصَّلَاةُ فَجَلَسْتُ فَلَمَّا صَلَّى قَالَ لِي أَلَسْتَ بِمُسْلِمٍ؟ قُلْتُ بَلَى قَالَ فَمَا مَنَعَكَ أَنْ تُصَلِّيَ مَعَ النَّاسِ؟ قَالَ قُلْتُ صَلَّيْتُ فِي أَهْلِي قَالَ فَصَلِّ مَعَ النَّاسِ وَلَوْ كُنْتَ قَدْ صَلَّيْتَ فِي أَهْلِكَ  

[Machine] I came to the Prophet ﷺ after having already performed prayer with my family, and then the congregational prayer was established. So, he mentioned the meaning of the hadith of Abdul Rahman.  

أَتَيْتُ النَّبِيَّ ﷺ وَقَدْ صَلَّيْتُ فِي أَهْلِي فَأُقِيمَتِ الصَّلَاةُ فَذَكَرَ مَعْنَى حَدِيثِ عَبْدِ الرَّحْمَنِ  

"What kept you from praying? Are you not a Muslim man?" He said: "Yes, but I had already prayed with my family." The Messenger of Allah ﷺsaid to him: "When you come you should pray with the people even if you have already prayed." (Using translation from Nasāʾī 857)  

أَنَّهُ كَانَ فِي مَجْلِسٍ مَعَ رَسُولِ اللهِ ﷺ وَأُذِّنَبِالصَّلَاةِ فَقَامَ رَسُولُ اللهِ ﷺ فَصَلَّى ثُمَّ رَجَعَ رَسُولُ اللهِ ﷺ وَمِحْجَنٌ فِي مَجْلِسِهِ فَقَالَ لَهُ رَسُولُ اللهِ ﷺ مَا مَنَعَكَ أَنْ تُصَلِّيَ مَعَ النَّاسِ أَلَسْتَ بِرَجُلٍ مُسْلِمٍ؟ قَالَ بَلَى يَا رَسُولَ اللهِ وَلَكِنِّي كُنْتُ قَدْ صَلَّيْتُ فِي أَهْلِي فَقَالَ لَهُ إِذَا جِئْتَ فَصَلِّ مَعَ النَّاسِ وَإِنْ كُنْتَ قَدْ صَلَّيْتَ