Examples given in Quran

 إِنَّ اللَّهَ لاَ يَسْتَحْيِي أَن يَضْرِبَ مَثَلاً مَّا بَعُوضَةً فَمَا فَوْقَهَا فَأَمَّا الَّذِينَ آمَنُواْ فَيَعْلَمُونَ أَنَّهُ الْحَقُّ مِن رَّبِّهِمْ وَأَمَّا الَّذِينَ كَفَرُواْ فَيَقُولُونَ مَاذَا أَرَادَ اللَّهُ بِهَـذَا مَثَلاً يُضِلُّ بِهِ كَثِيراً وَيَهْدِي بِهِ كَثِيراً وَمَا يُضِلُّ بِهِ إِلاَّ الْفَاسِقِينَ 2:26

(Fathe Muhammad Jalandari)
الله اس بات سے عار نہيں کرتا کہ مچھر يا اس سے بڑھ کر کسي چيز (مثلاً مکھي مکڑي وغيرہ) کي مثال بيان فرمائے. جو مومن ہيں، وہ يقين کرتے ہيں وہ ان کے پروردگار کي طرف سے سچ ہے اور جو کافر ہيں وہ کہتے ہيں کہ اس مثال سے خدا کي مراد ہي کيا ہے. اس سے (خدا) بہتوں کو گمراہ کرتا ہے اور بہتوں کو ہدايت بخشتا ہے اور گمراہ بھي کرتا تو نافرمانوں ہي کو2:26

(Muhammad Assad)
 2:26 Behold, God does not disdain to propound a parable of a gnat, or of something [even] less than that. Now, as for those who have attained to faith, they know that it is the truth from their Sustainer - whereas those who are bent on denying the truth say, "What could God mean by this parable?" In this way does He cause many a one to go astray, just as He guides many a one aright: but none does He cause thereby to go astray save the iniquitous,2:26

(Yousaf Ali)
 2:26 Allah disdains not to use the similitude of things, lowest as well as highest. Those who believe know that it is truth from their Lord; but those who reject Faith say: "What means Allah by this similitude?" By it He causes many to stray, and many He leads into the right path; but He causes not to stray, except those who forsake (the path),-2:26