Verse 24

तत्पुर्यष्टकमित्युक्तं भूतहृत्पद्मषट्पदम् ।तस्मिंस्तु तीव्रसंवेगाद्भावयद्भास्वरं वपुः

In plain words

That is called the puryaṣṭaka, the bee upon the heart-lotus of beings; and within it, conceiving through intense ardour a radiant body,