Quran 6:35 from Surah Al-An'aam on Divine Marvels.
وَإِن كَانَ كَبُرَ عَلَيۡكَ إِعۡرَاضُهُمۡ فَإِنِ ٱسۡتَطَعۡتَ أَن تَبۡتَغِيَ نَفَقٗا فِي ٱلۡأَرۡضِ أَوۡ سُلَّمٗا فِي ٱلسَّمَآءِ فَتَأۡتِيَهُم بِـَٔايَةٖۚ وَلَوۡ شَآءَ ٱللَّهُ لَجَمَعَهُمۡ عَلَى ٱلۡهُدَىٰۚ فَلَا تَكُونَنَّ مِنَ ٱلۡجَٰهِلِينَ
English translation: And if is difficult for you their aversion then if you are able to seek a tunnel in the earth or a ladder into the sky so that you bring to them a Sign But if (had) willed Allah surely He (would) have gathered them on the guidance So (do) not be of the ignorant
Transliteration: wa-in kana kabura alayka i'raduhum fa-ini is'tata'ta an tabtaghiya nafaqan fi al-ardi aw sullaman fi al-samai fatatiyahum biayatin walaw shaa al-lahu lajama'ahum ala al-huda fala takunanna mina al-jahilina