Al-An'am 6:35

وَإِن كَانَ كَبُرَ عَلَيْكَ إِعْرَاضُهُمْ فَإِنِ ٱسْتَطَعْتَ أَن تَبْتَغِىَ نَفَقًا فِى ٱلْأَرْضِ أَوْ سُلَّمًا فِى ٱلسَّمَآءِ فَتَأْتِيَهُم بِـَٔايَةٍ ۚ وَلَوْ شَآءَ ٱللَّهُ لَجَمَعَهُمْ عَلَى ٱلْهُدَىٰ ۚ فَلَا تَكُونَنَّ مِنَ ٱلْجَـٰهِلِينَ

Wa-in kāna kabura ʿalayka iʿ'rāḍuhum fa-ini is'taṭaʿta an tabtaghiya nafaqan fī l-arḍi aw sullaman fī l-samāi fatatiyahum biāyatin walaw shāa l-lahu lajamaʿahum ʿalā l-hudā falā takūnanna mina l-jāhilīna

And if their evasion is difficult for you, then if you are able to seek a tunnel into the earth or a stairway into the sky to bring them a sign, [then do so]. But if Allāh had willed, He would have united them upon guidance. So never be of the ignorant.