The niyya when making up the prayers missed over a lifetime

Question

How should the niyya for a prayer be made while making up the prayers missed over a lifetime, when the day, the date, the month and the year are not known?

Answer

He should make the niyya thus: “I am performing the very first Fajr prayer that remains owed by me.” Or he should make the niyya thus: “I am performing the very last Fajr prayer that remains owed by me.” The same applies to the other prayers.

Source: Fatawa Mahmudiyya

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