I surrender unto the lotus feet of Sri Nityananda Rama, who is known as Sankarsana in the midst of the catur-vyuha. He possesses full opulences and resides in Vaikunthaloka, far beyond the material creation - CC Adi 5.13

Expressions researched:
"I surrender unto the lotus feet of Śrī Nityānanda Rāma, who is known as Saṅkarṣaṇa in the midst of the catur-vyūha [consisting of Vāsudeva, Saṅkarṣaṇa, Pradyumna and Aniruddha]. He possesses full opulences and resides in Vaikuṇṭhaloka, far beyond the material creation"

Sri Caitanya-caritamrta

CC Adi-lila

I surrender unto the lotus feet of Śrī Nityānanda Rāma, who is known as Saṅkarṣaṇa in the midst of the catur-vyūha [consisting of Vāsudeva, Saṅkarṣaṇa, Pradyumna and Aniruddha]. He possesses full opulences and resides in Vaikuṇṭhaloka, far beyond the material creation.

CC Adi 5.13, Translation

I surrender unto the lotus feet of Śrī Nityānanda Rāma, who is known as Saṅkarṣaṇa in the midst of the catur-vyūha [consisting of Vāsudeva, Saṅkarṣaṇa, Pradyumna and Aniruddha]. He possesses full opulences and resides in Vaikuṇṭhaloka, far beyond the material creation.