Adi 1.2 (Obeisances to Gaura-Nitai)
citrau śan-dau tamo-nudau
Translation: I offer my respectful obeisances unto Śrī Kṛṣṇa Caitanya and Lord Nityānanda, who are like the sun and moon. They have arisen simultaneously on the horizon of Gauḍa to dissipate the darkness of ignorance and thus wonderfully bestow benediction upon all.
Śrī Caitanya-caritāmṛta, Madhya-līlā 20.100–118
From Srila Prabhupada’s early talks on Śrī Caitanya-caritāmṛta Nov-Dec, 1966 in New York