Jami` at-Tirmidhi 689
جامع الترمذي#689Sahihحَدَّثَنَا أَحْمَدُ بْنُ مَنِيعٍ، حَدَّثَنَا يَحْيَى بْنُ زَكَرِيَّا بْنِ أَبِي زَائِدَةَ، أَخْبَرَنِي عِيسَى بْنُ دِينَارٍ، عَنْ أَبِيهِ، عَنْ عَمْرِو بْنِ الْحَارِثِ بْنِ أَبِي ضِرَارٍ، عَنِ ابْنِ مَسْعُودٍ، قَالَ مَا صُمْتُ مَعَ النَّبِيِّ صلى الله عليه وسلم تِسْعًا وَعِشْرِينَ أَكْثَرُ مِمَّا صُمْنَا ثَلاَثِينَ . قَالَ وَفِي الْبَابِ عَنْ عُمَرَ وَأَبِي هُرَيْرَةَ وَعَائِشَةَ وَسَعْدِ بْنِ أَبِي وَقَّاصٍ وَابْنِ عَبَّاسٍ وَابْنِ عُمَرَ وَأَنَسٍ وَجَابِرٍ وَأُمِّ سَلَمَةَ وَأَبِي بَكْرَةَ أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ " الشَّهْرُ يَكُونُ تِسْعًا وَعِشْرِينَ " .
Ibn Mas`ud said:"What I fasted with the Prophet that was twenty-nine (days), was more than what we fasted that was thirty." (He said): There are narrations on this topic from `Umar, Abu Hurairah, `A'isha, Sa`d bin Abi Waqqas, Ibn `Abbas, Ibn `Umar, Anas, Jabir, Umm Salamah, Abu Bakrah, that the Prophet (ﷺ) said: "The month is twenty nine (days)
Scholarly Authentication
The label above is the grade most of these scholars gave, each scholar counted once — 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. When they judged only its chain of narrators (“Isnaad”), the label says “Sound chain”. Each scholar's own wording:
Our source also lists this ruling under Ahmad Muhammad Shakir, the editor of the printed edition it was taken from. It is al-Albani's ruling printed again, so it is counted once.
In-book reference: 8:8