What is the ruling on fulfilling a vow to fast ten unspecified days, whether they be obligatory or supererogatory, with the intention of supererogation and the vow's wording being: "I vowed to fast ten days if I succeeded in such-and-such subject"?
Source: FtawySummary from Ftawy's records · added here Sep 2, 2026
Fulfilling a vow of obedience is obligatory, as Allah the Almighty says: {And let them fulfill their vows}, and the Prophet, peace and blessings be upon him, said: "Whoever vows to obey Allah, let him obey Him."
Therefore, it is obligatory to fast the ten days if success is achieved, and fasting them becomes a duty. However, if the condition is not met, then nothing is required of you, and fasting them is considered voluntary.
We note that a conditional vow is disliked, but it must be fulfilled when the condition it is tied to is met.
Summary from Ftawy's records · added here
Reviewed by El Fatwa's sharia committee.
Read the full answer on Ftawyhttps://ftawy.com/en/questions/123579
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- Original fatwa ID
- 123579
- Added here
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- Summary from Ftawy's records, reviewed by El Fatwa's sharia committee.
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