首楞嚴義疏注經 8.424

8.424

舌根作罪其罪最廣：一貪味為罪，殺戮必多；二發語造業，其罪又廣，以妄言、綺語、兩舌、惡口比於餘根，此最廣博，故感鐵網周覆世界也。

When the tongue faculty commits sin, its sins are the most extensive: first, committing sins out of greed for flavours, slaughter is bound to be manifold; second, creating karma through emitting speech, its sin is even more extensive. In comparison to the other faculties, lying, frivolous speech, malicious gossip, and harsh speech are the most pervasive. Therefore, it brings about an iron net covering the world all around.