起信論疏筆削記 3.2

3.2

約法生起下，二：初、標科總示。依詮染者，以淨法是攝末歸本義，今明從本起末，故唯取染。略五重者，廣即十四，今於十四之中類束為五，故云略也。對諸宗者，即前五教也。前以能詮為門，故云約教；此以所詮為門，故云約法也。

From "In terms of the arising of dharmas..." below, there are two [parts]: first, marking the heading and giving a general presentation. "Relying on expressing defilement": because pure dharmas represent the meaning of gathering the branches back to the root, whereas here it clarifies producing the branches from the root, hence it takes only defilement. "Summarily in five tiers": in broad terms there are fourteen; now within the fourteen they are grouped into five categories, hence it says "summarily." "In contrast to the various tenets": namely, the five teachings mentioned before. Previously, taking that which expresses as the approach, it said "in terms of teaching"; here, taking that which is expressed as the approach, it says "in terms of dharmas."