سُنَنُ النَّسَائِيِّ
Sunan an-Nasa’i 2382
The Book of Fasting
Mentioning the different reports from Ghaylan bin Jarir about it
أَخْبَرَنِي هَارُونُ بْنُ عَبْدِ اللَّهِ، قَالَ حَدَّثَنَا الْحَسَنُ بْنُ مُوسَى، قَالَ أَنْبَأَنَا أَبُو هِلاَلٍ، قَالَ حَدَّثَنَا غَيْلاَنُ، - وَهُوَ ابْنُ جَرِيرٍ - قَالَ حَدَّثَنَا عَبْدُ اللَّهِ، - وَهُوَ ابْنُ مَعْبَدٍ الزِّمَّانِيُّ - عَنْ أَبِي قَتَادَةَ، عَنْ عُمَرَ، قَالَ كُنَّا مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فَمَرَرْنَا بِرَجُلٍ فَقَالُوا يَا نَبِيَّ اللَّهِ هَذَا لاَ يُفْطِرُ مُنْذُ كَذَا وَكَذَا . فَقَالَ لاَ صَامَ وَلاَ أَفْطَرَ .
It was narrated that 'Umar said: "We were with the Messenger of Allah and we passed by a man. They said: 'O Prophet (ﷺ) of Allah, this man has not broken his fast for such and such a time.' He said: 'He has neither fasted nor broken his fast."' 'Ata said: "someone who heard him told me that Ibn 'Umar (said) that the Prophet (ﷺ) said: 'Whoever fasts every day of his life, then he has not fasted."
Sunan an-Nasa'i, 2382Sahih (Darussalam)