What is the manner of making up the 'Isha and Fajr prayers for someone who missed them due to a health reason? What is the significance of the first and second calls to prayer for Fajr, the difference between the Fajr and Subh prayers, and how is the Fajr prayer made up for someone who missed it?

If sleep occurs before the time (of prayer) begins, then there is no sin, but the Isha and Fajr prayers must be made up in their proper order after purification. The first Adhan (definition) is before Fajr to inform those who are awake and those who are asleep of the approaching time, while the second Adhan is raised when the time for the obligatory prayer begins. The Fajr prayer is the same as the Subh prayer; there is no difference between them.