The Quran root ض ل ل ḍ-l-l

إِنَّ اللَّهَ لَا يَسْتَحْيِي أَن يَضْرِبَ مَثَلًا مَّا بَعُوضَةً فَمَا فَوْقَهَا فَأَمَّا الَّذِينَ آمَنُوا فَيَعْلَمُونَ أَنَّهُ الْحَقُّ مِن رَّبِّهِمْ وَأَمَّا الَّذِينَ كَفَرُوا فَيَقُولُونَ مَاذَا أَرَادَ اللَّهُ بِهَٰذَا مَثَلًا يُضِلُّ بِهِ كَثِيرًا وَيَهْدِي بِهِ كَثِيرًا وَمَا يُضِلُّ بِهِ إِلَّا الْفَاسِقِينَ ٢٦

يُضِلُّ yuḍillu · He lets go astray

Indeed, Allāh is not timid to present an example - that of a mosquito or what is smaller than it. And those who have believed know that it is the truth from their Lord. But as for those who disbelieve, they say, "What did Allāh intend by this as an example?" He misleads many thereby and guides many thereby. And He misleads not except the defiantly disobedient, (Surah Al-Baqarah, 2:26)

وَدَّت طَّائِفَةٌ مِّنْ أَهْلِ الْكِتَابِ لَوْ يُضِلُّونَكُمْ وَمَا يُضِلُّونَ إِلَّا أَنفُسَهُمْ وَمَا يَشْعُرُونَ ٦٩

يُضِلُّونَكُمْ yuḍillūnakum · they could lead you astray

A faction of the People of the Scripture wish they could mislead you. But they do not mislead except themselves, and they perceive [it] not. (Surah Ali 'Imran, 3:69)

أَمْ تُرِيدُونَ أَن تَسْأَلُوا رَسُولَكُمْ كَمَا سُئِلَ مُوسَىٰ مِن قَبْلُ وَمَن يَتَبَدَّلِ الْكُفْرَ بِالْإِيمَانِ فَقَدْ ضَلَّ سَوَاءَ السَّبِيلِ ١٠٨

ضَلَّ ḍalla · he went astray (from)

Or do you intend to ask your Messenger as Moses was asked before? And whoever exchanges faith for disbelief has certainly strayed from the soundness of the way. (Surah Al-Baqarah, 2:108)

لَقَدْ مَنَّ اللَّهُ عَلَى الْمُؤْمِنِينَ إِذْ بَعَثَ فِيهِمْ رَسُولًا مِّنْ أَنفُسِهِمْ يَتْلُو عَلَيْهِمْ آيَاتِهِ وَيُزَكِّيهِمْ وَيُعَلِّمُهُمُ الْكِتَابَ وَالْحِكْمَةَ وَإِن كَانُوا مِن قَبْلُ لَفِي ضَلَالٍ مُّبِينٍ ١٦٤

ضَلَالٍ ḍalālin · (the) error

Certainly did Allāh confer [great] favor upon the believers when He sent among them a Messenger from themselves, reciting to them His verses and purifying them and teaching them the Book [i.e., the Qur’ān] and wisdom, although they had been before in manifest error. (Surah Ali 'Imran, 3:164)

صِرَاطَ الَّذِينَ أَنْعَمْتَ عَلَيْهِمْ غَيْرِ الْمَغْضُوبِ عَلَيْهِمْ وَلَا الضَّالِّينَ ٧

الضَّالِّينَ l-ḍālīna · (of) those who go astray

The path of those upon whom You have bestowed favor, not of those who have earned [Your] anger or of those who are astray. (Surah Al-Fatihah, 1:7)

أُولَٰئِكَ الَّذِينَ اشْتَرَوُا الضَّلَالَةَ بِالْهُدَىٰ فَمَا رَبِحَت تِّجَارَتُهُمْ وَمَا كَانُوا مُهْتَدِينَ ١٦

الضَّلَالَةَ l-ḍalālata · [the] astraying

Those are the ones who have purchased error [in exchange] for guidance, so their transaction has brought no profit, nor were they guided. (Surah Al-Baqarah, 2:16)