Caitanya-caritāmṛta 5.48
turīya, viśuddha-sattva, ‘saṅkarṣaṇa’ nāma tiṅho yāṅra aṁśa, sei nityānanda-rāma
[tureeya, vishuddha-sattva, ‘sankarshana’ naama tinho yaanra amsha, sei nityaananda-raama]
Blended reading (Sanskrit + English inline)
turīya, viśuddha-sattva, ‘saṅkarṣaṇa’ nāma tiṅho yāṅra aṁśa, sei nityānanda-rāma
That Saṅkarṣaṇa, who is transcendental pure goodness, is a partial expansion of Nityānanda Balarāma.
My note
Source: vedabase.io