法華玄義釋籤 18.24

18.24

四開中二：先開三藏及藏中行，次以二教況。又二：先況，次重述小善。既四行俱通四教所行，當知不以行能表理，但應立觀照理導行，方可令行至正境中，故知無理無益苦行。若無行者理必不顯，故教行理三相藉而顯，互相光飾相導相成，凡諸行人不可不達此也。

Part 4, "Opening," has two [parts]: first, opening the Tripiṭaka and the practices within the Tripiṭaka; next, drawing comparisons with the two teachings. This also has two [parts]: first, drawing comparisons; next, reiterating minor goods. Since the four practices are all universally practiced across the four teachings, one should know that practices themselves cannot express the principle; one must only establish contemplation to illuminate the principle and guide practice, and only then can practice be made to reach the correct realm. Therefore one knows that without the principle, it is useless asceticism. If there are no practices, the principle will certainly not be manifested. Hence the three—teaching, practice, and principle—rely on each other to be manifested, mutually illuminating and adorning, mutually guiding and fulfilling each other. All practitioners cannot fail to understand this.