"Narrated Abu Huraira: The Prophet said, ‘If a house fly falls in the drink of anyone of you, he should dip it (in the drink), for one of its wings has a disease and the other has the cure for the disease." Bukhari vol.4 book 54 ch.16 no.537 p.338.
"Abu Huraira alisimulia: Nabii alisema, ‘Kama nzi wa nyumbani ataangukia kwenye kinywaji cha mmoja wenu, na amchovye nzi huyo (kwenye kinywaji), kwani moja ya mbawa zake ina ugonjwa na nyingine ina tiba ya ugonjwa huo." Bukhari juzuu ya 4 kitabu cha 54 sura ya 16 na.537 uk.338.