(45) باب ذِكْرِ الاِخْتِلاَفِ عَلَى سُفْيَانَ الثَّوْرِيِّ فِيهِ
It was narrated from 'Uqbah bin 'Amir that the Messenger of Allah said:
"Whoever fasts one day in the cause of Allah, the mighty and sublime, Allah will separate him the distance of one hundred years from the fire."
Reference: Sunan an-Nasa'i 2254
In-book reference: Book 22, Hadith 165
English translation: Vol. 3, Book 22, Hadith 2256