• أَدُلُّكَ
• أَدُلُّكُمْ
• دَلَّهُمْ
• دَلِيل
• دَلَّىٰهُمَا
• نَدُلُّكُمْ

Appears 8 times in the Quran.

1. 7:22 فَدَلَّىٰهُمَا بِغُرُورٍ فَلَمَّا ذَاقَا ٱلشَّجَرَةَ بَدَتْ لَهُمَا سَوْءَٰتُهُمَا وَطَفِقَا يَخْصِفَانِ عَلَيْهِمَا مِن وَرَقِ ٱلْجَنَّةِ وَنَادَىٰهُمَا رَبُّهُمَآ أَلَمْ أَنْهَكُمَا عَن تِلْكُمَا ٱلشَّجَرَةِ وَأَقُل لَّكُمَآ إِنَّ ٱلشَّيْطَٰنَ لَكُمَا عَدُوٌّ مُّبِينٌ

   Then he caused them to fall by deceit; so when they tasted of the tree, their evil inclinations became manifest to them, and they both began to cover themselves with the leaves of the garden; and their Lord called out to them: Did I not forbid you both from that tree and say to you that the Shaitan is your open enemy?
   

2. 20:40 إِذْ تَمْشِىٓ أُخْتُكَ فَتَقُولُ هَلْ أَدُلُّكُمْ عَلَىٰ مَن يَكْفُلُهُۥ فَرَجَعْنَٰكَ إِلَىٰٓ أُمِّكَ كَىْ تَقَرَّ عَيْنُهَا وَلَا تَحْزَنَ وَقَتَلْتَ نَفْسًا فَنَجَّيْنَٰكَ مِنَ ٱلْغَمِّ وَفَتَنَّٰكَ فُتُونًا فَلَبِثْتَ سِنِينَ فِىٓ أَهْلِ مَدْيَنَ ثُمَّ جِئْتَ عَلَىٰ قَدَرٍ يَٰمُوسَىٰ

   When your sister went and said: Shall I direct you to one who will take charge of him? So We brought you back to your mother, that her eye might be cooled and she should not grieve and you killed a man, then We delivered you from the grief, and We tried you with (a severe) trying. Then you stayed for years among the people of Madyan; then you came hither as ordained, O Musa.
   

3. 20:120 فَوَسْوَسَ إِلَيْهِ ٱلشَّيْطَٰنُ قَالَ يَٰٓـَٔادَمُ هَلْ أَدُلُّكَ عَلَىٰ شَجَرَةِ ٱلْخُلْدِ وَمُلْكٍ لَّا يَبْلَىٰ

   But the Shaitan made an evil suggestion to him; he said: O Adam! Shall I guide you to the tree of immortality and a kingdom which decays not?
   

4. 25:45 أَلَمْ تَرَ إِلَىٰ رَبِّكَ كَيْفَ مَدَّ ٱلظِّلَّ وَلَوْ شَآءَ لَجَعَلَهُۥ سَاكِنًا ثُمَّ جَعَلْنَا ٱلشَّمْسَ عَلَيْهِ دَلِيلًا

   Have you not considered (the work of) your Lord, how He extends the shade? And if He had pleased He would certainly have made it stationary; then We have made the sun an indication of it
   

5. 28:12 وَحَرَّمْنَا عَلَيْهِ ٱلْمَرَاضِعَ مِن قَبْلُ فَقَالَتْ هَلْ أَدُلُّكُمْ عَلَىٰٓ أَهْلِ بَيْتٍ يَكْفُلُونَهُۥ لَكُمْ وَهُمْ لَهُۥ نَٰصِحُونَ

   And We ordained that he refused to suck any foster mother before, so she said: Shall I point out to you the people of a house who will take care of him for you, and they will be benevolent to him?
   

6. 34:7 وَقَالَ ٱلَّذِينَ كَفَرُوا۟ هَلْ نَدُلُّكُمْ عَلَىٰ رَجُلٍ يُنَبِّئُكُمْ إِذَا مُزِّقْتُمْ كُلَّ مُمَزَّقٍ إِنَّكُمْ لَفِى خَلْقٍ جَدِيدٍ

   And those who disbelieve say: Shall we point out to you a man who informs you that when you are scattered the utmost scattering you shall then be most surely (raised) in (to) a new creation?
   

7. 34:14 فَلَمَّا قَضَيْنَا عَلَيْهِ ٱلْمَوْتَ مَا دَلَّهُمْ عَلَىٰ مَوْتِهِۦٓ إِلَّا دَآبَّةُ ٱلْأَرْضِ تَأْكُلُ مِنسَأَتَهُۥ فَلَمَّا خَرَّ تَبَيَّنَتِ ٱلْجِنُّ أَن لَّوْ كَانُوا۟ يَعْلَمُونَ ٱلْغَيْبَ مَا لَبِثُوا۟ فِى ٱلْعَذَابِ ٱلْمُهِينِ

   But when We decreed death for him, naught showed them his death but a creature of the earth that ate away his staff; and when it fell down, the jinn came to know plainly that if they had known the unseen, they would not have tarried in abasing torment.
   

8. 61:10 يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ هَلْ أَدُلُّكُمْ عَلَىٰ تِجَٰرَةٍ تُنجِيكُم مِّنْ عَذَابٍ أَلِيمٍ

   O you who believe! shall I lead you to a merchandise which may deliver you from a painful chastisement?