Bulugh al-Maram, Book 1, Hadith 18 (In-Book) ⓘ
and Abu Da’ud who added: “It (the fly) protects itself with the diseased wing (by dipping it first in a drink).
وَأَبُو دَاوُدَ, وَزَادَ: { وَإِنَّهُ يَتَّقِي بِجَنَاحِهِ اَلَّذِي فِيهِ اَلدَّاءُ } (22). 2 - سنن أبي داود (3844) وإسنادها حسن.
also referenced under: Book 1, Hadith 16 (English)