When he had so said (touto autou lalountos). Genitive absolute of present participle (Westcott and Hort) rather than aorist (eipontos). While he was saying this.
A dissension (stasis). This old word for standing or station (Heb 9:8) from histè„mi, to place, we have seen already to mean insurrection (Act 19:40 which see). Here it is strife as in Act 15:2.