Surely the above information is very clear, that the fly is not unclean and the food or drink touched by flies may we eat or we drink with the mechanism that was conveyed by the Prophet Muhammad above.
To be honest, the hadith above and several other hadiths that show the existence of scientific miracles possessed by the Prophet Muhammad remind us of the word of Allah Ta’ala below;
وَمَا يَنطِقُ عَنِ ٱلۡهَوَىٰٓ ٣ إِنۡ هُوَ إِلَّا وَحۡيٞ يُوحَىٰ ٤
Nor does he speak out of desire  It is naught but revelation that is revealed . (An-Najm ; 3-4).
That is, that what was said by the Prophet Muhammad was not sourced from lust, but originated from revelation!
I think that is enough for this article (fly falls into a drink). May be useful! Amen!
See you in the next article!
We can find information about all that in, Hasan Sulaiman an-Nuri and ‘Alawi Abbas al-Maliki, Ibaanatu al-Ahkaam Syarhu Buluughi al-Maraam, Dar al-Fikr, Beirut, Vol. I, p. 36-37