kāyarūpasaṃyamāt tadgrāhyaśaktistambhe cakṣuḥprakāśāsaṃprayoge+antardhānam [YS 3.21]

kāyasya rūpe saṃyamād rūpasya yā grāhyā śaktis tāṃ pratiṣṭabhnāti. grāhyaśaktistambhe sati cakṣuṣprakāśāsaṃprayoge+antardhānam utpadyate yoginaḥ. etena śabdādyantardhānam uktaṃ veditavyam.