The absence of water, performing tayammum, and praying the obligatory prayer without searching for water or inquiring about it

Question:
May Allah reward you. The questioner, S.A. from Madinah, says: I was at Muzdalifah and was overcome by a fit of drowsiness. When I woke up for the Fajr prayer and wanted to perform wudu', I found that neither I nor the women in the group had with us anything but a very small amount of water, not enough for a complete wudu'. So I performed tayammum and prayed Fajr with that tayammum. Is my prayer valid or not? Please give us a ruling, may Allah reward you with good.

Answer:
Your prayer is not valid because water is available in Muzdalifah, praise be to Allah, and is distributed to its various sections; the water taps and places to obtain water are known, and there are restrooms supplied with water. Therefore, you must repeat this prayer because you prayed without ritual purity, and the water was present, but you did not seek it or inquire about it. Yes.