question #1 Sahih al-Bukhari 2828, Book 56, Hadith 44 : What is the significance of fasting in the life of a Muslim, especially after the passing of the Prophet Muhammad (ﷺ)?

In the life-time of the Prophet, Abu Talha did not fast because of the Jihad, but after the Prophet (ﷺ) died I
never saw him without fasting except on `Id-ul-Fitr and `Id-ul-Aclha.