大方廣圓覺修多羅了義經略疏 1.330

1.330

即前第二發菩提心也。直心正念真如故清淨矣，故偈中直云菩提心也。《華嚴》云：「忘失菩提心而修諸善根，魔所攝持。」既為所攝，即過患眾多，故請發心因緣，令得永離。且中間忘失善根，猶彼攝持，況都未發心諸行，豈離彼業？

[Commentary:] This is the second tier above: arousing the bodhicitta. Because the straight mind rightly recollects tathatā, it is pure; therefore the verse directly calls it the mind of bodhi. The Huayan Sūtra states: "If one forgets and loses the mind of bodhi while cultivating wholesome roots, this is sustained by Māra." Since it is sustained by him, faults and tribulations are numerous; therefore he requests the causes and conditions for arousing the mind, so that one may permanently leave them behind. If even forgetting wholesome roots in the interim is still sustained by him, how much more so for all the practices of someone who has not aroused the mind at all—how could they be free from his deeds?