سنن أبي داود

Narrated AbuHurayrah:

A woman met him and he found the odour of perfume in her. Her clothes were fluttering in the air. He said: O maid-servant of the Almighty, are you coming from the mosque? She replied: Yes. He said: For it did you use perfume? She replied: Yes. He said: I heard my beloved AbulQasim (ﷺ) say: The prayer of a woman who uses perfume for this mosque is not accepted until she returns and takes a bath like that of sexual defilement (perfectly).

Abu Dawud said: Al-i'sar means dust.