How do We Atone for a Number of Oaths, if We do not Know How Many They are?
Question :
Previously, I used to swear oaths that I would do such- and-such and I would not implement them. Now I wish to make atonement for this. Is it sufficient for me to atone once, bearing in mind that I swore many times, but I do not remember how many times?
Answer:
Try to assess the approximate number of oaths you swore about and then broke, then atone for their approximate number, if they were oaths upon different matters. For one who swore about one thing, such as: "By Allah, I will not visit Zaid, by Allah, I will not visit Zaid," then the atonement is one.
Source:
The Permanent Committee
Fatawa Islamiyah, Vol. 6 Pages 400-401