Hadith 7141

(حديث مرفوع) حَدَّثَنَا بِشْرُ بْنُ مُفَضَّلٍ ، عَنِ ابْنِ عَجْلَانَ ، عَنْ سَعِيدٍ الْمَقْبُرِيّ ، عَنْ أَبِي هُرَيْرَةَ ، قَالَ : قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : " إِذَا وَقَعَ الذُّبَابُ فِي إِنَاءِ أَحَدِكُمْ ، فَإِنَّ فِي أَحَدِ جَنَاحَيْهِ دَاءً ، وَفِي الْآخَرِ شِفَاءً ، وَإِنَّهُ يَتَّقِي بِجَنَاحِهِ الَّذِي فِيهِ الدَّاءُ ، فَلْيَغْمِسْهُ كُلَّهُ " .
It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "If a fly falls into the vessel of any one of you, then let him remember that in one wing of the fly there is healing and in the other there is disease, and it protects itself with the wing that has the disease (it puts that wing into the vessel first). Therefore, he should immerse the fly completely in it (then using it is up to his discretion)."
Hadith Reference مسند احمد / مسند المكثرين من الصحابة / 7141
Hadith Grading حکم دارالسلام: إسناده قوي و الحديث صحيح، خ: 5782