What fasting is sunnet after completing Hac?

Voluntary fasting after Hac is an excellent way to continue building on the spiritual foundation established during the hac ibadeti. The most significant post-Hac fasting opportunity is the six days of Shawwal — Hz. Peygamber (sallallahu aleyhi ve sellem) said: 'Whoever fasts Ramadan then follows it with six days of Shawwal, it is as if they fasted the entire year' (Muslim). Since Hac occurs in Dhul Hijjah (after Shawwal), this applies if you fast the following Shawwal.

Year-round sunnet fasts include: Mondays and Thursdays (Hz. Peygamber's regular practice, as these are days when deeds are presented to Allah), the three white days of each lunar month (13th, 14th, and 15th — Ayyam al-Beed), the Day of Arafat (9th Dhul Hijjah, for non-hacilar), and the Day of Ashura (10th Muharram, with the 9th or 11th). Important: fasting is prohibited on the two Eid days and the three days of Tashreeq (11th-13th Dhul Hijjah), so new hacilar should not attempt to fast immediately after their Hac rituals conclude.