The Messenger of Allah ﷺ said, "Whoever fasts a single day in the cause of Allah, Allah will distance his face from the Fire by seventy years."
حدثنا هشام بن عمار حدثنا أنس بن عياض حدثنا عبد الله بن عبد العزيز الليثي عن المقبري
قال رسول الله ﷺ من صام يوما في سبيل الله زحزح الله وجهه عن النار سبعين خريفا
Its isnad is daif, and the preceding hadith suffices in its place. Abdullah bin Abdul-Aziz Laythi is daif, and his memory became confused toward the end of his life (Taqrib).