Al-An'aam 6:35

If you find their denial hard to bear, then seek – if you can – a tunnel into the earth or a stairway into the sky to bring them a sign. If Allah had willed, He could have brought them all to guidance; so do not be of those who are ignorant.

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.

35. If their aversion (from you, O Muhammad صلى الله عليه وسلم and from that with which you have been sent) is hard on you, (and you cannot be patient of their harm to you), then if you were able to seek a tunnel in the earth or a ladder to the sky, so that you may bring them a sign (and you cannot do it, so be patient). And had Allâh willed, He could have gathered them together (all) on true guidance, so be not you one of those who are Al-Jâhilûn (the ignorant).

And if their aversion is grievous unto thee, then, if thou canst, seek a way down into the earth or a ladder unto the sky that thou mayst bring unto them a portent (to convince them all)! - If Allah willed, He could have brought them all together to the guidance - So be not thou among the foolish ones.