His saying: "La uqsimu" (I do swear), meaning: I swear by this city, referring to: Makkah.
قَوْله: ﴿لَا أقسم﴾ أَي: أقسم ﴿بِهَذَا الْبَلَد﴾ يَعْنِي: مَكَّة
