瑜伽論記 8.428

8.428

言若諸菩薩依上總別四緣四因等乃至亦非無動者，基公解云：此中意明若前四因四緣中，若別依一因、一緣，或總由四因緣二發心者，於四力中，但依二力，謂自因力。此二力中，或別依一力、或總依此二力而發心者，此皆堅固不動，差別依他力及加行或總二力而發心者，此不堅固亦非無動。

Regarding 'if bodhisattvas rely collectively or individually on the four conditions, four causes, and so forth, up to and are also not unshakeable': Master Ji explains: The intention clarified here is that, among the preceding four causes and four conditions, if one generates the mind by relying individually on one cause or one condition, or collectively on the four causes and conditions, among the four powers, one relies only on two powers, namely one's own power and the power of the cause. Among these two powers, if one generates the mind by relying individually on one power or collectively on these two powers, these are all firm and unshakeable. If, by contrast, one generates the mind by relying on another's power and application, or collectively on these two powers, this is not firm and is also not unshakeable.