Sunan an-Nasa'i 2221
سنن النسائي#2221Sahihأَخْبَرَنَا الرَّبِيعُ بْنُ سُلَيْمَانَ، قَالَ أَنْبَأَنَا ابْنُ وَهْبٍ، قَالَ أَخْبَرَنِي جَرِيرُ بْنُ حَازِمٍ، أَنَّ مُحَمَّدَ بْنَ عَبْدِ اللَّهِ بْنِ أَبِي يَعْقُوبَ الضَّبِّيَّ، حَدَّثَهُ عَنْ رَجَاءِ بْنِ حَيْوَةَ، قَالَ حَدَّثَنَا أَبُو أُمَامَةَ الْبَاهِلِيُّ، قَالَ قُلْتُ يَا رَسُولَ اللَّهِ مُرْنِي بِأَمْرٍ يَنْفَعُنِي اللَّهُ بِهِ . قَالَ " عَلَيْكَ بِالصِّيَامِ فَإِنَّهُ لاَ مِثْلَ لَهُ " .
It was narrated that Raja bin Haiwah said:"Abu Umamah Al-Bahili narrated to me: 'I said: O Messenger of Allah, tell me of something by which Allah will benefic me. He said: Take to fasting, for there is nothing like it
Scholarly Authentication
The label above is the grade most of these scholars gave — 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. Each scholar's own wording:
In-book reference: 22:132