If the 13th, 14th, and 15th of the month coincide with Monday and Thursday, does the person receive the virtue of both?

Question:
May Allah reward you. Al-Mursal Mufarrih from Jazan sent a number of questions. In the first, he says: A person who fasts the white days of every month, but he fasted three days of a month that were scattered, not the white days, and his fasting coincided with Thursday and Monday. Does he obtain the virtue of the white days along with the virtue of fasting on Monday and Thursday?

Answer:
It is prescribed to fast three days of every month. If they coincide with the white days, that is better. Otherwise, it is permissible to fast the three days from the beginning of the month, the middle, or the end. As for fasting on Monday and Thursday, it is a fast independent of the three-day fast; it has an independent reward. As for Monday and Thursday, they are from every week. So this is a worship, and this is a worship. However, if his fasting of the three days of the month coincides with Thursday or Monday, the reward of both worships will be recorded for him.