Sunan Ibn Majah
533
Sahih+3

It was narrated that a woman from (the tribe of) Banu 'Abdul-Ashhal said:"I said to the prophet: 'Between the mosque and I there is a filthy path.' He said: 'After that is there a cleaner path?' I said: 'Yes.' He said: 'This is (a remedy) for that

SahihAl-Albani
SahihMuhammad Fouad Abd al-Baqi