(32) باب ذِكْرِ الاِخْتِلاَفِ عَلَى يَحْيَى بْنِ أَبِي كَثِيرٍ وَمُحَمَّدِ بْنِ عَمْرٍو عَلَى أَبِي سَلَمَةَ فِيهِ
It was narrated that Ibn 'Abbas said:
"The messenger of Allah said: 'Do not fast one or two days ahead of the month, unless that happens to be a day that one of you habitually fasts."' Abu 'Abdur-Rahman (An-Nasai) said: This is a mistake. '
Reference: Sunan an-Nasa'i 2174
In-book reference: Book 22, Hadith 85
English translation: Vol. 3, Book 22, Hadith 2176