ابتده الخُطْبَةَ

(K, TA) He extemporized the discourse, or sermon, or oration; spoke it, or composed it, extemporaneously, impromptu, without premeditation. (TA.) And ↓ هُمْ يَتَبَادَهُونَ الخُطَبَ (K, TA) They extemporize discourses, &c.: here the measure تَفَاعُلٌ has not its proper quality [of denoting participation in the manner of contention, though it has in a phrase mentioned before]. (TA.)