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 . but if allah had willed he would have united them upon guidance. so never be of the ignorant.
وإن كان كبر عليك إعراضهم فإن استطعت أن تبتغي نفقا في الأرض أو سلما في السماء فتأتيهم بآية ولو شاء الله لجمعهم على الهدى فلا تكونن من الجاهلين