Sunan an-Nasa'i 484
سنن النسائي#484SahihSalamah 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
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih
In-book reference: 5:37