妙法蓮華經玄贊 9.241

9.241

贊曰：後二離惡，一不惱他、二不戲論。「爭」音側莖反，捔也。「諍」鬪也。二皆得。

The commentary states: The latter two abandon evils: 1. not troubling others; 2. not engaging in frivolous disputes (prapañca). "Zhēng" (爭) is pronounced ce-geng (側莖); it means contending. "Zhèng" (諍) means fighting/arguing. Both readings are acceptable.