俱舍論頌疏論本 21.95

21.95

二各一合三者，二謂欲界滅、道二諦各立一遍知。言合三者，欲界四諦合成三遍知也，一見苦集斷遍知、二見滅斷遍知、三見道斷遍知。

"For two, one each, combining into three": "two" refers to establishing one comprehensive knowledge each for the two truths of cessation and the path in the desire realm. The phrase "combining into three" means that the four truths of the desire realm combine to form three comprehensive knowledges: first, the comprehensive knowledge of abandonment through seeing suffering and origin; second, the comprehensive knowledge of abandonment through seeing cessation; third, the comprehensive knowledge of abandonment through seeing the path.