(38) باب التَّسْهِيلِ فِي صِيَامِ يَوْمِ الشَّكِّ
It was narrated from Abu Hurairah that the Messenger of Allah used to say:
"Do not fast one or two days ahead of the month, unless the one who used to observe a regular fast. In that case let him fast." ' (DE)
Reference (DE): Sunan an-Nasa'i 2190 (DE)
In-book reference (DE): Book 22, Hadith 101 (DE)
English translation (DE): Vol. 3, Book 22, Hadith 2192 (DE)