๐ In The Name Of Allah The Most Gracious The Most Merciful
๐️ Quick notes regarding fasting the six days of Shawwaal:
1] It is allowed to start fasting the Sunnah fasts of six days in Shawwaal on the day right after Eid Al-Fitr as long as one has completed fasting the obligatory fasts of the whole of Ramadan.
2] When it comes to Sunnah fasting, one does not require to specify their niyyah / intention to fast prior to fasting for Allah's sake. So if a Muslim wakes up after sunrise without Suhoor, they may intend to fast the Sunnah fasting of six days of Shawwaal from the moment they decide to fast on that day, as long as they didn't eat or drink anything beforehand.
3] Since it is only a Sunnah (not obligatory), a Muslim who is fasting the Sunnah fasts of Shawwaal can break their voluntary fast and fast again on another day if somebody invites them for a gathering.
Allah the Almighty knows best.
๐ Abu Ayyub RadhiAllahu 'anhu narrated: Allah's noble Messenger Muhammad SallAllahu 'alaihi wa sallam said, "Whoever fasts the month of Ramadan and then follows it with six days of fasting in the month of Shawwal, it will be as if he fasted for the entire year."
Source: Sahih Muslim 1164
Grade: Sahih (Authentic) according to Muslim
https://abukhadeejah.com/fasting-the-six-days-of-shawwal-before-making-qada-of-the-days-missed-in-ramadan-ibn-baz/