The mention of flies

يَٰٓأَيُّهَا ٱلنَّاسُ ضُرِبَ مَثَلٌۭ فَٱسْتَمِعُوا۟ لَهُۥٓ ۚ إِنَّ ٱلَّذِينَ تَدْعُونَ مِن دُونِ ٱللَّهِ لَن يَخْلُقُوا۟ ذُبَابًۭا وَلَوِ ٱجْتَمَعُوا۟ لَهُۥ ۖ وَإِن يَسْلُبْهُمُ ٱلذُّبَابُ شَيْـًۭٔا لَّا يَسْتَنقِذُوهُ مِنْهُ ۚ ضَعُفَ ٱلطَّالِبُ وَٱلْمَطْلُوبُ

O men! Here is a parable set forth! listen to it! Those on whom, besides Allah, ye call, cannot create (even) a fly, if they all met together for the purpose! and if the fly should snatch away anything from them, they would have no power to release it from the fly. Feeble are those who petition and those whom they petition!