Reference: Fataawa Ramadhaan v2 p662 no.668
Fataawa al-Lajnah ad-Daa.imah lil-Buhooth al-‘Ilmiyyah wal-Iftaa. no.8966
Question: If a person had one fast from Ramadhaan to make up, is it permissible for him to fast on a Friday?
Response: It is permissible for a Muslim to fast on a Friday if he is making up a fast from Ramadhaan, even if it is just one day.
And with Allaah lies all the success, and may Allaah send prayers and salutations upon our Prophet Muhammad ﷺ and his family and his companions.
