Narrated Abu Umamah Al-Bahili: That the Prophet (ﷺ) said, "Whoever fasts a day in the cause of Allah, Allah shall put between him and the Fire a trench whose distance is like that between the heavens and the earth." This Hadith is Gharib as a narration of Abu Umamah
Hasan SahihHasan SahihIsnaad HasanBook 22 · Hadith 6