Chapter: The performance of Tayammum by a non-traveller (is permissible) when water is not available and when one is afraid that the time of Salat (prayer) may elapse

The Prophet (ﷺ) came from the direction of Bir Jamal. A man met him and greeted him. But he did not return back the greeting till he went to a (mud) wall and wiped his face and hands with its dust (performed Tayammum) and then returned back the greeting.