瑜伽師地論略纂 15.14

15.14

相應中云「方便相應」，謂加行智，為一切根本事名方便也。　「稱可道理」，謂智與理相應。

In [the section on] conjunction (saṃprayoga), it says: "Conjunction of means" refers to preparatory wisdom (prayogika-jñāna), which is called means because it acts as the basis for all fundamental matters. "Conforming to reason" refers to wisdom being conjoined with principle.