Al Kahf Ayah 93
حَتَّىٰٓ إِذَا بَلَغَ بَيْنَ ٱلسَّدَّيْنِ وَجَدَ مِن دُونِهِمَا قَوْمًا لَّا يَكَادُونَ يَفْقَهُونَ قَوْلاً ٩٣
until he reached ?a pass? between two mountains. He found in front of them a people who could hardly understand ?his? language.