Thread by @Ubaidbinriyaz

@Hadithoftheday No.
One can't fast all year as there are two Eids in one year and it's Haram to fast in Eid Days.
Narrated Abu Sa’eed al-Khudri R.A:
The Prophet ﷺ forbade fasting on the day of al-Fitr and al-Nahr.” - (Bukhaari, 1992; Muslim, 827)

@Hadithoftheday It is also haraam to fast on the days of al-Tashreeq which are the three days after Eid al-Adha (the 11th, 12th and 13th of Dhu’l-Hijjah) because the Prophet ﷺ said: “The days of al-Tashreeq are days of eating, drinking and remembering Allaah.” Narrated by Muslim, 1141.

@Hadithoftheday Aside from the days on which it is forbidden to fast - the two days of Eid, the three days of Al-Tashreeq (11th, 12th, 13th of Dhul-Hijjah), the Prophet ﷺ would fast intermittently throughout the year. Based on one’s capacity, fasting is a beloved act of worship.

@Hadithoftheday Prophet ﷺ said: “The best fasting is the fast of Dawood A.S.

Narrated `` Abdullah bin `Amr:

Allah's Messenger ﷺ said to me, "The most beloved fasting to Allah was the fasting of the Prophet Dawood who used to fast on alternate days. (Sahih al-Bukhari 3420)

@Hadithoftheday One can fast any time of the year,but there are days specifically mentioned that carry more reward
1. 6 Days in Shawal
2. Mondays & Thursdays
3. Fridays (combined with sat/thu)
4. The White Days (Ayam Al-Beed)
5. Day of Ashura-10th of Muharam
6. Arafah -9th of Dhul-Hijah
7.Shaban

@Hadithoftheday 1. 6 Days in Shawal:
Abu Ayyoob R.A reported that the Messenger of Allah ﷺ, said: “Whoever fasts Ramadan and follows it with six days of Shawal, it will be as if he fasted for a lifetime” [Muslim].

@Hadithoftheday 2. Mondays and Thursdays:

Aisha R.A narrated: "The Prophet ﷺ used to try to fast on Mondays and Thursdays" [Tirmidhi, Nasai, and Ibn Majah].

@Hadithoftheday 3. Fridays:
Fridays are the most blessed day of the week.
One should not fast Friday alone, but in combination with Thursday or Saturday.

Narrated Abu Huraira: I heard the Prophet ﷺ, say: "None of you should fast on Friday unless he fasts a day before or after it" [Bukhari].

@Hadithoftheday 4. The White Days (Ayam Al-Beed):
Abdullah ibn Amr said: The Messenger of Allah ﷺ said to me: “It is sufficient for you to fast three days every month, because for every good deed you will have the reward of ten like it, so that will be like fasting for a lifetime”[Bukhari]

@Hadithoftheday The white days refer to the 13th, 14th, and 15th of the lunar calendar/Hijri calender.

@Hadithoftheday 5. Day of Ashura - 10th of Muharram:
There’s no day better to fast in after Ramadan than Muharram. +

@Hadithoftheday Ibn Abbas was asked about observing of fast on the day of Ashura, whereupon he said: “I do not know Allah's Messenger ﷺ, singling out any day's fast & considering it more excellent than another, except this day (the day of Ashura) & this month, i.e the month of Ramadan” [Muslim]

@Hadithoftheday 6. Arafah - 9th of Dhul-Hijjah:
For those not performing Hajj, fasting on the Day of Arafah, i.e the 9th of Dhul-Hijjah, is highly recommended.+

@Hadithoftheday Abu Qatadah reported: The Messenger of Allah ﷺ was asked about the observance of fasting on the day of Arafah. He said, "It is an expiation for the sins of the preceding year and the current year" [Muslim].

@Hadithoftheday 7. Shaban:
The month of Shaban gives an ample opportunity to prepare for Ramadan, both spiritually & physically

It was narrated that Aisha R.A reported that the Prophet ﷺ liked the month of Shaban more than any other month as far as supplementary fasting is concerned [Bukhari]