Sunan an-Nasa'i 2360
سنن النسائي#2360Sahihأَخْبَرَنَا عَمْرُو بْنُ عُثْمَانَ، عَنْ بَقِيَّةَ، قَالَ حَدَّثَنَا بَحِيرٌ، عَنْ خَالِدِ بْنِ مَعْدَانَ، عَنْ جُبَيْرِ بْنِ نُفَيْرٍ، أَنَّ عَائِشَةَ، قَالَتْ إِنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ يَتَحَرَّى صِيَامَ الاِثْنَيْنِ وَالْخَمِيسِ .
It was narrate from Jubair bin Nufair that 'Aishah said:"The Messenger of Allah used to be keen to fast on Mondays and Thursday
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 ZaiHasan
In-book reference: 22:271