It includes both adultery (i.e. illicit sexual intercourse of two persons either of whom is married to a third person) and fornication (i.e. illicit sexual intercourse of unmarried persons).
6:29) Loko ku nonisiwa matandza kumbe mbewu ya vununa (kumbe haswimbirhi) swa munhu un'wana loyi u nga tekanangiki na yena, sweswo hi leswi Bibele yi swi vitanaka por·nei′a, ku tikhoma loko biha hi tlhelo ra rimbewu.