IBNHIBBAN 5250:
from Abū Hurayrah —
when a fly alights in anyone’s vessel, he should plunge it all in, for in one of its wings there is a disease, and in the other is a cure. It prevents the wing of it is which there is a cure, so plunge it all in (the vessel). (Using translation from Abū Dāʾūd 3844)
ابن حبّان ٥٢٥٠:
عن ابو هريره —
قَالَ رَسُولُ اللَّهِ ﷺ «إِذَا وَقَعَ الذُّبَابُ فِي إِنَاءِ أَحَدِكُمْ فَلْيَغْمِسْهُ فَإِنَّ فِي أَحَدِ جَنَاحَيْهِ دَاءٌ وَفِي الْآخَرِ شِفَاءٌ وَإِنَّهُ يَتَّقِي بِجَنَاحِهِ الَّذِي فِيهِ الدَّاءُ فَلْيَغْمِسْهُ كُلَّهُ ثُمَّ لِيَنْزِعْهُ»
hadithunlocked.com