مُسْنَدُ أَحْمَدَ
Musnad Ahmad 228
Musnad `Umar b. al-Khattab (ra)
حَدَّثَنَا أَبُو مُعَاوِيَةَ، حَدَّثَنَا الْأَعْمَشُ، عَنْ إِبْرَاهِيمَ، عَنْ عَلْقَمَةَ، عَنْ عُمَرَ، رَضِيَ اللَّهُ عَنْهُ قَالَ كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَسْمُرُ عِنْدَ أَبِي بَكْرٍ رَضِيَ اللَّهُ عَنْهُ اللَّيْلَةَ كَذَاكَ فِي الْأَمْرِ مِنْ أَمْرِ الْمُسْلِمِينَ وَأَنَا مَعَهُ.
It was narrated from ‘Alqamah that ‘Umar (رضي الله عنه) said: The Messenger of Allah (ﷺ) was staying up late one night with Abu Bakr, discussing some issue of the Muslims, and I was with him.
Musnad Ahmad, 228[lts isnad is Sahih] (Darussalam)