Śrīmad-Bhāgavatam · Text 11.4.3
Who is speaking and story frame
भूतैर्यदा पञ्चभिरात्मसृष्टै:
पुरं विराजं विरचय्य तस्मिन् ।
स्वांशेन विष्ट: पुरुषाभिधान-
मवाप नारायण आदिदेव: ॥ ३ ॥
bhūtair yadā pañcabhir ātma-sṛṣṭaiḥ
puraṁ virājaṁ viracayya tasmin
svāṁśena viṣṭaḥ puruṣābhidhānam
avāpa nārāyaṇa ādi-devaḥ
When the primeval Lord Nārāyaṇa created His universal body out of the five elements produced from Himself and then entered within that universal body by His own plenary portion, He thus became known as the Puruṣa.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.