Abū Hurairah Radi Allāhu ‘anhu narrates that there was a black male or black girl (a narrator had doubt as as to if it had been a male or feminine) who employed to sweep the Masjid. She/he handed away. Nabi Sallallāhu ‘alaihi wa Sallam asked (his companions) concerning this man https://mediajx.com/story21217895/the-definitive-guide-to-how-to-clean-mosques