Question: I broke my Sawm (fast) one day of Ramadaan due to severe illness. Is it permissible for me to make up for it on the Day of `Arafah (9th of Thul-Hijjah) – the Day marking the Hajj – bearing in mind that I had already observed Sawm on that day?
Answer: If you have already observed Sawm on the Day of `Arafah to make up for the day you did not fast in Ramadaan, it will replace making up for the day you missed. However, it is preferable to make up for the days of Sawm one misses on a day other than the Day of `Arafah, so that one may dedicate oneself to Thikr (Remembrance of Allaah), Du`aa’ (supplication) and other acts of worship during Hajj or to fast it voluntarily outside of Hajj. By doing so, one may combine both virtues of observing Sawm voluntarily on the Day of `Arafah and compensation reconciling the opinions of scholars regarding whether compensating for days of Sawm missed during the first nine days of Thul-Hijjah is Makrooh (disliked)… read more here.
Question 89: Controversy arose among the seekers of religious knowledge, not to mention the masses, regarding observing Sawm (fast) on Friday if it coincides with the Day of `Arafah (9th of Thul-Hijjah). Is it permissible to observe Sawm on the Day of `Arafah alone if it happens to be on a Friday? Or, should a person observe Sawm on a day preceding or succeeding it, bearing in mind that the former case conflicts with the Hadeeth prohibiting the observance of Sawm on Friday alone? We hope that Your Eminence will make this issue clear providing the sound Shar`ee (Islaamic legal) ruling. May Allaah reward you with the best!
Answer: It is permissible to observe Sawm on the Day of `Arafah alone if it happens to be on a Friday without observing Sawm on a day preceding or succeeding it as the Prophet (peace be upon him) is authentically reported to have urged people to observe Sawm on this day highlighting its superiority and the great reward for observing Sawm on it… read more here.