Surah Al-Kahf, Verse 14

وَرَبَطۡنَا عَلَىٰ قُلُوبِهِمۡ إِذۡ قَامُواْ فَقَالُواْ رَبُّنَا رَبُّ ٱلسَّمَٰوَٰتِ وَٱلۡأَرۡضِ لَن نَّدۡعُوَاْ مِن دُونِهِۦٓ إِلَٰهٗاۖ لَّقَدۡ قُلۡنَآ إِذٗا شَطَطًا١٤

warabaṭnā ʿalā qulūbihim idh qāmū faqālū rabbunā rabbu l-samāwāti wal-arḍi lan nadʿuwā min dūnihi ilāhan laqad qul'nā idhan shaṭaṭan

And We bound [i.e., made firm] their hearts when they stood up and said, "Our Lord is the Lord of the heavens and the earth. Never will we invoke besides Him any deity. We would have certainly spoken, then, an excessive transgression.