Sunan an-Nasa'i 484
سنن النسائي#484Sahihأَخْبَرَنَا عَمْرُو بْنُ يَزِيدَ، قَالَ حَدَّثَنَا بَهْزُ بْنُ أَسَدٍ، قَالَ حَدَّثَنَا شُعْبَةُ، قَالَ حَدَّثَنَا سَلَمَةُ بْنُ كُهَيْلٍ، قَالَ سَمِعْتُ سَعِيدَ بْنَ جُبَيْرٍ، قَالَ رَأَيْتُ عَبْدَ اللَّهِ بْنَ عُمَرَ صَلَّى بِجَمْعٍ فَأَقَامَ فَصَلَّى الْمَغْرِبَ ثَلاَثًا ثُمَّ صَلَّى الْعِشَاءَ رَكْعَتَيْنِ ثُمَّ قَالَ هَكَذَا رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَصْنَعُ فِي هَذَا الْمَكَانِ .
Salamah bin Kuhail narrated:"I heard Sa'eed bin Jubair say: 'I saw 'Abdullah bin 'Umar pray in Jam'; he made the Iqamah and prayed Maghrib, three Rak'ahs, then he prayed 'Isha', two Rak'ahs, then he said: 'This is what I saw the Messenger of Allah (ﷺ) do in this place
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 5:37