(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." ' (JA)
Reference (JA): Sunan an-Nasa'i 2172 (JA)
In-book reference (JA): Book 22, Hadith 83 (JA)
English translation (JA): Vol. 3, Book 22, Hadith 2174 (JA)