Making Wudu with Hot Water at Tahajjud Time and Performing the Fard Prayer with It

Question

If, because of weakness and cold, the prayer at tahajjud time is performed with tayammum, and wudu with hot water is made only for the fard prayer of Fajr, will the prayer be valid or not? In such a case, is it better to leave tahajjud or to pray tahajjud with tayammum? Can both tahajjud and Fajr be prayed with a single tayammum or not?

Answer

There is a means of heating water, and at Fajr time water is heated, wudu is made with it and the Fajr prayer is performed; and if there is also enough room in the time that water can be heated at tahajjud time and Fajr prayed with that [wudu], then let the water be heated at tahajjud time itself: make wudu with it and pray tahajjud, and perform the Fajr prayer with that same…

Source: Fatawa Mahmudiyya

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