Sunan an-Nasa'i 2431
سنن النسائي#2431Da'ifأَخْبَرَنَا مُحَمَّدُ بْنُ حَاتِمٍ، قَالَ أَنْبَأَنَا حِبَّانُ، قَالَ أَنْبَأَنَا عَبْدُ اللَّهِ، عَنْ شُعْبَةَ، عَنْ أَنَسِ بْنِ سِيرِينَ، قَالَ سَمِعْتُ عَبْدَ الْمَلِكِ بْنَ أَبِي الْمِنْهَالِ، يُحَدِّثُ عَنْ أَبِيهِ، أَنَّ النَّبِيَّ صلى الله عليه وسلم أَمَرَهُمْ بِصِيَامِ ثَلاَثَةِ أَيَّامِ الْبِيضِ قَالَ " هِيَ صَوْمُ الشَّهْرِ " .
Abdul-Malik bin Abi Al-Minhai narrated from his father that:the Prophet commanded them to fast the three days of Al-Bid. He said: "That is (equivalent to) fasting for the whole month
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: 22:342