(31) باب التَّقَدُّمِ قَبْلَ شَهْرِ رَمَضَانَ
It was narrated from Abu Hurairah that the Messenger of Allah said:
"Do not fast ahead of the month, except for a man who habitually fasts, and that day happenes to be one of his regular fasts." ' (FR)
Reference (FR): Sunan an-Nasa'i 2172 (FR)
In-book reference (FR): Book 22, Hadith 83 (FR)
English translation (FR): Vol. 3, Book 22, Hadith 2174 (FR)