Quranic Parables

إِنَّ ٱللَّهَ لَا يَسْتَحْىِۦٓ أَن يَضْرِبَ مَثَلًا مَّا بَعُوضَةً فَمَا فَوْقَهَا

Surely Allah does not shy away from using the parable of a mosquito or what is even smaller.