If a person vows charity using an amount less than the required Zakat amount from an asset subject to Zakat, how are the obligations fulfilled?
Chapter on Zakat on Debt and Charity
Al-Mughni
Book of Zakat
Primary text
The required Zakat amount must be paid. In one legal opinion, the vow is included within this payment.
Supporting text
In another opinion, both the Zakat amount and the vowed lesser amount must be paid separately.