Explanation

In the Quran and Bible, it is mentioned that the nation of Hazrat Musa (Moses, A.S.) fasted for 40 days as an act of repentance and devotion to Allah (God).

Key References:

Quran (Surah Al-Baqarah 2:51, 7:142) – Mentions Musa (A.S.) fasting for 40 days on Mount Sinai while receiving the Torah.

Bible (Exodus 34:28) – Confirms Moses fasted 40 days and nights without food or water.