Fiqh al-Siyam al-Mustahabb

Fiqh al-Siyam al-Mustahabb — Recommended Fasting Beyond Ramadan: The Six Days of Shawwal, Mondays and Thursdays, the Day of Arafah, Ashura, and the White Days — Their Evidence and Spiritual Significance

فِقهُ الصِّيَامِ المُستَحَبّ — الصِّيَامُ المُستَحَبُّ مَا وَرَاءَ رَمَضَان: أَيَّامُ شَوَّالٍ السِّتَّةُ وَالاِثنَينِ وَالخَمِيسِ وَيَومُ عَرَفَةَ وَعَاشُورَاءُ وَالأَيَّامُ البِيضُ — أَدِلَّتُهَا وَأَهمِيَّتُهَا الرُّوحِيَّة

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Fiqh al-Siyam al-Mustahabb (فِقهُ الصِّيَامِ المُستَحَبّ — Jurisprudence of Recommended [Voluntary] Fasting; fasting that goes beyond the obligatory fard siyam of Ramadan; based on explicit Prophetic hadith specifying which days and periods carry special reward; the major categories are: six days of Shawwal [completing Ramadan's benefit, with the hadith 'whoever fasts Ramadan then follows it with six from Shawwal it is as though he fasted the entire year']; Mondays and Thursdays [the Prophet's own habitual practice]; the Day of Arafah [9 Dhul Hijja, expiation for two years' minor sins]; the Day of Ashura [10 Muharram, expiation for one year's minor sins]; and the white days [13th, 14th, 15th of each lunar month, equivalent to continuous fasting per the hadith]) constitutes a significant dimension of the Sunnah's spiritual economy.

The Foundation: Why Extra Fasting?

The Prophet said: “The best of prayer after the obligatory is the night prayer. The best of fasting after Ramadan is in the month of God, Muharram.” (Muslim). This places voluntary fasting within a hierarchy of merit — Ramadan is fard; what comes after has degrees of virtue.

The spiritual logic across all recommended fasting categories is consistent: fasting heightens the soul’s orientation toward God, disciplines the self, and generates expiation for minor sins.

The Six Days of Shawwal

Hadith: “Whoever fasts Ramadan and then follows it with six days from Shawwal — it is as if he fasted the entire year.” (Muslim 1164)

Reasoning: Ramadan’s fasts (29-30 days) × 10 (each good deed multiplied by 10) = 290-300 days. The six of Shawwal × 10 = 60-70 days. Together: approximately one full year.

These six days may be fasted consecutively or distributed across the month; the scholarly majority permits either.

Mondays and Thursdays

Hadith: The Prophet was asked why he fasted these days. He answered: “These are the two days on which deeds are presented to God. I love for my deeds to be presented while I am fasting.” (Abu Dawud, al-Nasa’i)

Day of Arafah (9 Dhul Hijja)

For those not performing Hajj, fasting on the Day of Arafah — the day the pilgrims stand on the plain of Arafah — is strongly recommended.

Hadith: “It expiates the previous year and the coming year.” (Muslim 1162)

Day of Ashura (10 Muharram)

Ashura was a fast observed by the Jews of Medina, who told the Prophet it commemorated Moses’ deliverance from Pharaoh. The Prophet said: “We have more right to Moses than they do” and fasted it, recommending fasting on the 9th and 10th together to distinguish Muslim observance from Jewish practice.