大乘起信論略述 2.206

2.206

論。若諸凡夫至無有是處　述曰。次對理事二定以明真偽。於中有二。初明理定是真。後顯事定之偽。此初也。謂諸凡十信人等修行大乘菩薩行者。莫不皆信真如三昧得入十住稱姓位中。除此更無能入之道。故云不習無有是處。然如來種有其二種。一者本住。謂眾生身本覺真性。即是起如來之種本來有故。二者始起。謂初住上得定信心往如來家當紹佛位。是為佛種即方起故。今此得入如來種者。即是始起如來種也。

[Treatise:] If ordinary beings [... it is impossible]. [Exposition:] Next is contrasting the two concentrations of principle and phenomena to clarify the true and the false. Within this there are two: first, clarifying that concentration on principle is true; second, showing that concentration on phenomena is false. This is the first. That is to say, when ordinary beings at the ten faiths and others cultivate the Mahāyāna bodhisattva practices, there are none who do not rely on the suchness samādhi to enter the stages of the ten dwellings termed "gotra" (lineage); aside from this, there is no other way to enter; hence it says "without practicing it, it is impossible." However, the Tathāgata-gotra has two kinds: first, original dwelling, referring to the true nature of original awakening in the bodies of sentient beings, which is the seed giving rise to the Tathāgata and is originally present; second, newly arisen, referring to attaining concentration and faith at the first dwelling and above, going to the house of the Tathāgata to succeed to the Buddha's stage, which is the Buddha-seed just beginning to arise. Now, this "attaining entry into the Tathāgata-gotra" is precisely the newly arisen Tathāgata-gotra.