Sunan an-Nasa'i, Book 22, Hadith 177 (In-Book) ⓘ
It was narrated from Abu Salamah: That the Messenger of Allah, Abu Bakr and 'Umar were in Marr Az-Zahran. He narrated it in Mursal from. (Daif)
أَخْبَرَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، قَالَ حَدَّثَنَا عُثْمَانُ بْنُ عُمَرَ، قَالَ حَدَّثَنَا عَلِيٌّ، عَنْ يَحْيَى، عَنْ أَبِي سَلَمَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم وَأَبَا بَكْرٍ وَعُمَرَ كَانُوا بِمَرِّ الظَّهْرَانِ مُرْسَلٌ .
also referenced under: Hadith 2266 (Reference) & Volume 3, Book 22, Hadith 2268 (DarusSalam)