Can I combine the intention of fasting ?

Praise be to Allah

Summary: Yes, you can combine the intention of making up missed fasts with fasting on special days like Ashura, Arafah, or the white days.

Detailed Answer: It is permissible to combine the intention of making up missed fasts from Ramadan with fasting on special days such as Ashura, Arafah, the white days, and Mondays and Thursdays. This practice is supported by many scholars, including Sheikh Ibn Uthaymeen. The wisdom behind this is that Allah’s mercy is vast, and combining intentions allows you to gain the reward of both obligatory and voluntary fasts.

The Prophet Muhammad (ﷺ) said, “Whoever dies and he had fasts to make up, then his guardian must fast on his behalf”

(Sahih Bukhari 1952).

This indicates that missed fasts can be made up any time before the next Ramadan.

The Prophet Muhammad (ﷺ) said, “Whoever has missed some days of Ramadan, he has the whole year to make them up. But he should not delay them until the next Ramadan.”

(Sunan Ibn Majah 1672)

Conclusion: Combining intentions for missed fasts and voluntary fasts is a mercy from Allah, enabling Muslims to maximize their rewards and fulfill their religious duties efficiently.

And Allah Knows Best