俱舍論頌疏論本 16.92

16.92

諸染雜穢語者，諸染心語，名雜穢語，染所發言皆雜穢故。諸染頌有加語一字，故語一字初句流來。此雜穢語具二緣成：一染污心、二所發語。

Regarding "all defiled idle chatter," all speech from a defiled mind is called idle chatter, because words uttered from defilement are all idle chatter. In the verse, "speech" is added to "all defiled," so the character "speech" is carried over from the first line. This idle chatter is accomplished through two conditions: first, a defiled mind; second, the uttered speech.