What is the decree for the fast of Shawwal?
After Ramadan, it is mustahab (recommended) to fast six days in the month of Shawwal. The Prophet (pbuh) stated “He who observed the fast of Ramadan and then followed it with six days of Shawwal, it would be as if he fasted the whole year.” (Muslim, Fasting, 24; Tirmidhi, Fasting, 53), encouraging people to fast for six days in the month of Shawwal. This fast can be observed on end or on separate days.