金剛經纂要刊定記 4.176

4.176

因勝者。三毒即貪瞋癡，此明能害有情故貶云毒。以生起即是不善，久伏故名善根。故《華嚴》云：「我昔所造諸惡業，皆由無始貪瞋癡。」《唯識》云：「善謂信、慚愧、無貪等三根，有生長義，故名根也。」善與不善皆由此三，苟能伏之乃名因勝。因緣俱勝方起此信。是知實信誠不易得。一念尚爾況乎永信，及持說等耶？

Regarding "superiority of causes": the three poisons are greed, anger, and delusion; this clarifies that they can harm sentient beings, hence they are deprecatingly called poisons. Since their arising is unwholesome, long subduing them is called wholesome roots. Hence the Avataṃsaka Sūtra states: "All evil karmas I have committed in the past are entirely due to beginningless greed, anger, and delusion." The Vijñaptimātratā states: "Wholesomeness refers to the three roots of faith, shame/remorse, non-greed, etc.; having the meaning of growing, they are called roots." Wholesome and unwholesome both stem from these three; if one can subdue them, it is called superiority of causes. Only when both causes and conditions are superior does this faith arise. Thus we know that true faith is truly not easy to attain. A single thought is already like this, how much more so eternal faith, as well as upholding, reciting, and explaining?