Sunan Nasai 435 — Tayammum For One Who Finds Water After Praying

It is narrated from Tariq bin Shihab that a man became junub, so he did not pray and came to the Prophet (peace be upon him) and mentioned this to him. The Prophet (peace be upon him) said: "You did the right thing." Then another man became junub, so he performed tayammum and prayed, and the Prophet (peace be upon him) said to him the same thing he had said to the other, that is, "You did the right thing."