You are reading a tafsir for the group of verses 18:77 to 18:78
فانطلقا حتى اذا اتيا اهل قرية استطعما اهلها فابوا ان يضيفوهما فوجدا فيها جدارا يريد ان ينقض فاقامه قال لو شيت لاتخذت عليه اجرا ٧٧ قال هاذا فراق بيني وبينك سانبيك بتاويل ما لم تستطع عليه صبرا ٧٨
فَٱنطَلَقَا حَتَّىٰٓ إِذَآ أَتَيَآ أَهْلَ قَرْيَةٍ ٱسْتَطْعَمَآ أَهْلَهَا فَأَبَوْا۟ أَن يُضَيِّفُوهُمَا فَوَجَدَا فِيهَا جِدَارًۭا يُرِيدُ أَن يَنقَضَّ فَأَقَامَهُۥ ۖ قَالَ لَوْ شِئْتَ لَتَّخَذْتَ عَلَيْهِ أَجْرًۭا ٧٧ قَالَ هَـٰذَا فِرَاقُ بَيْنِى وَبَيْنِكَ ۚ سَأُنَبِّئُكَ بِتَأْوِيلِ مَا لَمْ تَسْتَطِع عَّلَيْهِ صَبْرًا ٧٨
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3

The habitation mentioned أَهْلَ قَرْ‌يَةٍ (the people of a town - 77) which Sayyidna Musa and al-Khadir (علیہ السلام) passed through and whose inhabitants refused to host them was Antakiah, as in the report of Sayyidna Ibn ` Abbas ؓ ، and Aikah, as in the report of Ibn Sirin. It has also been reported from Sayyidna Abu Hurairah ؓ that it was some habitation of al-Andulus (Spain) (Mazhari). Allah knows best.