因明入正理論疏 2.136

2.136

述曰：下別顯六。初共，有三：一標名舉宗因、二釋不定義、三指不定相。此初二也。

Commentary: Below, the six are shown individually. First, the common, which has three parts: 1. stating the name and citing the thesis and reason; 2. explaining the meaning of indeterminate; 3. indicating the characteristic of being indeterminate. These are the first two.