The ruling on fasting on a Saturday alone

Question:
The questioner: I have heard that if one fasts on a Saturday, his fast is not valid unless he fasts on the day before it or the day after it. I fasted on a Saturday to make up a fast for the expiation of an oath, but I did not fast on Sunday because I did not wake up until after the call to prayer. Do I have to repeat the fast? Please clarify the ruling on this. May Allah reward you.

Answer:
The fast is valid. Fasting on a Saturday is valid, even if done alone. The hadith prohibiting fasting on a Saturday is weak and inconsistent according to the scholars, and it is not relied upon. However, if you fast on Saturday along with Sunday or Friday, that is better. Otherwise, the correct view is that there is no harm in fasting on a Saturday alone, and that the hadith is weak due to its inconsistency and the lack of soundness in its chains of narration. But out of scrupulousness and to avoid scholarly disagreement, if a person fasts on a Saturday, he should fast on Sunday or Friday as well. Yes.

The presenter: May Allah reward you with good.