Does one who does not find water and for whom dry ablution is sufficient have intercourse with his wife?

Question:
If he does not find water, is it permissible for him to have intercourse with his wife?

Answer:
In the desert, you mean?
The student: I mean the water was not available, so is it permissible for him to have intercourse with his wife.
The Shaykh: In the desert, he has no water?
The student: In the desert, in any place.
The Shaykh: He has intercourse with his wife and performs dry ablution. He has no water, praise be to Allah, like the Bedouin in the desert who have no water.
Q: And does dry ablution suffice in place of the full ritual bath...?
The Shaykh: Dry ablution is sufficient.