What is the ruling on a vow contingent on two conditions, one of which has been fulfilled while the other has not? Is the non-fulfillment of the second condition a punishment for delaying the fulfillment of the first vow, and what is the punishment for not fulfilling a vow?

A vow (nadhr) is not a cause for the fulfillment of a request; rather, it is religiously forbidden. However, if a Muslim vows an act of obedience to Allah, he must fulfill it immediately once its condition is met, because the command to fulfill it is immediate. Failing to fulfill a vow is a grave sin, as it is breaking a promise made to Allah Almighty, which is followed by hypocrisy in the heart.