What is the ruling on combining three obligatory prayers (Dhuhr, Asr, and Maghrib) at one time when unable to perform them at their prescribed times, and in what order should they be performed, or is it permissible to make them up the following day, each at its time after the present prayer?

Prayers must be performed on time. Those who delay them beyond their time without a valid excuse are threatened with woe. It is not permissible to combine Maghrib with Dhuhr and Asr. However, it is permissible to combine Dhuhr with Asr, and Maghrib with Isha, when there is a valid reason for combining them. Missed prayers must be made up in order.