Where does “خطبة” come from?

خطبة (Arabic) comes from Arabic ط, from Nabataean 𐢋, from Classical Syriac ܛ, from Aramaic ט‬, from Aramaic 𐡈, from Egyptian 𓄤.

خطبة (Arabic): verbal noun of خَطَبَ; betrothal, engagement;...