大毘盧遮那成佛經疏 11.35

11.35

經云「若觀於彼心，無上菩提心」，謂觀行者自心中無上菩提心也。云心者即是無上大菩提心。若住斯觀，即能淨身口意業。由能淨業故，淨與非淨業離也。意言：有如是業生，淨不淨皆不能染也。經云當業，謂當生此淨心之業也。此果皆不能污。何以故？常與理相應故。譬如蓮華雖生於淤泥之中，而不為彼之所污染。如是行者即同諸佛。何以故？能生一切諸如來故也。此即是仁中之尊佛也。意云：纔觀菩提心，已得如來之果，況身現證而成佛乎。

The sūtra says: "If one contemplates that mind, the unexcelled bodhicitta", it refers to the practitioner contemplating the unexcelled bodhicitta within his own mind. "Mind" refers to the unexcelled great bodhicitta. If one abides in this contemplation, one can purify the karma of body, speech, and mind. Because of being able to purify karma, one is separated from both pure and impure karma. The meaning is: if such karma arises, neither pure nor impure can defile it. The sūtra says "corresponding karma", which refers to the karma that produces this pure mind. These fruits can never defile it. Why? Because it is always in accord with the principle. For example, although a lotus grows out of the mud, it is not soiled by it. Such a practitioner is equal to all buddhas. Why? Because he is able to give birth to all tathāgatas. This is the Honoured One among humans, the Buddha. The meaning is: merely by contemplating the bodhicitta, one has already attained the fruit of the tathāgatas, how much more so when one personally realizes it in this body and attains buddhahood!