Voluntary Sawm and delaying making up for the missed obligatory Sawm
What is the ruling on observing the optional Sawm (fast) of the Day of `Arafah (9th of Dhul-Hijjah) while one has yet to make up for days of Sawm missed during Ramadan?
If someone observes Sawm on the Day of `Arafah voluntarily while one has to make up for days of Sawm missed during Ramadan, his Sawm is valid. However, it is encouraged by Shari`ah not to delay compensation because one's soul is in Allah's Hands and one does not know when death will come. Thus, observing Sawm on the Day of `Arafah as compensation for a missed day of Ramadan is better than observing voluntary Sawm on that a day. Undoubtedly, obligatory acts of worship are to be given priority over supererogatory acts and should be given greater attention.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.