In the layers of the Yogācārabhūmi divided by L. Schmithausen, we explored the original meaning and origin of ālayavijñāna, only in the layer up to the ‘Proof Portion’ of the Viniścayasaṃgrahaṇī, in which the physical features were conspicuously apparent. First of all, we could see that based on 阿頼耶所蔵 in the Abhidharmamahāvibhāṣāśāstra, which was noted by N. Funahashi as the original form of ālayavijñāna, the two meanings of the word ālaya, the settling place, the attachment, point to a body. As a result, since the technical term “ekayogakṣema” used in the definition of ālayavijñāna in the Saṃdhinirmocanasūtra is based on the idea of āśrayaparivṛtti, ālayavijñāna is the name of a series of āśrayaparivṛtti processes, and the introduction of ālayavijñāna came from the discovery through yoga practice.