Is it permissible for a person to perform voluntary fasting while he has missed fasts from Ramadan to make up?

Question:
May Allah reward you with good and do you well. Shaykh Salih, is it permissible for a person to perform voluntary acts while he has an obligatory duty that he has not made up?

Answer:
The better and more cautious course is to prioritize making up the missed fasts. If he performs voluntary fasting before making up what he owes, that is valid according to many scholars. Good, good. Because the time for making up is extended, and it is permissible to perform voluntary acts before an extended obligatory duty, just as it is permissible to perform a voluntary prayer before the obligatory prayer when its time has entered, or it is prescribed to do so. The point is that it is permissible to perform voluntary acts before an extended obligatory duty, but whenever a person hastens to fulfill the obligatory duty, it is more cautious and better for him. Yes. May Allah reward you with good and do you well.