瑜伽師地論略纂 5.12

5.12

疑中，「於師」者，佛、僧二寶。「於法」者，理；「學」者，行；「誨」者，教；「證」者，果。即教、理、行、果四法寶也。由於三寶懷疑惑故，不能趣入勇猛方便道諦，及正斷寂靜滅諦。　或「方便」者，加行道；「正斷」者，道諦；「寂靜」者，滅諦也。

In doubt: "regarding the Teacher" refers to the two jewels of the Buddha and the Saṃgha. "Regarding the Dharma" refers to principle; "training" refers to practice; "instruction" refers to teaching; "realization" refers to fruit. These are precisely the four Dharma jewels of teaching, principle, practice, and fruit. Because one harbors doubt regarding the Three Jewels, one cannot enter the path of vigorous upāya, which is the truth of the path, nor the quietude of correct abandonment, which is the truth of cessation.
Alternatively, "upāya" is the prayogamārga; "correct abandonment" is the truth of the path; and "quietude" is the truth of cessation.