The ruling on the prayer of one who does not find water for major ritual impurity

The questioner:
May Allah bless you. A woman from Riyadh says that the water supply to her house was cut off before Fajr, and she was in a state of major ritual impurity at the time. She performed wudu with a small amount of water that was not sufficient for a full bath, then prayed and went to sleep. She performed the full ritual bath before Dhuhr when the water arrived. She asks if her action was correct?

The Shaykh:
If the water did not arrive during the time of prayer, she should perform tayammum with dust. If you do not find water, perform tayammum and pray, and that is sufficient for her. Yes.

The questioner:
And what about if the water arrives?

The Shaykh:
It is obligatory to use the water. If the water arrives and she is able to use it, she must use it. Yes.

The questioner:
If it arrived before Dhuhr, meaning after a long period.

The Shaykh:
Do not delay the prayer until the time of Dhuhr enters; pray with tayammum.

The questioner:
We mean, Shaykh, is tayammum sufficient in place of the full bath, even if the water arrives late?

The Shaykh:
Yes.