Śrī Caitanya Caritamrta · Text Ādi 5.154
সেই অংশ লঞা জ্যেষ্ঠ–কনিষ্ঠাভিমান ।
অংশাংশি–রূপে শাস্ত্রে করয়ে ব্যাখ্যান ॥ ১৫৪ ॥
sei aṁśa lañā jyeṣṭha-kaniṣṭhābhimāna
aṁśāṁśi-rūpe śāstre karaye vyākhyāna
Kṛṣṇa and Balarāma present Themselves as younger brother and elder brother, but in the scriptures They are described as the original Supreme Personality of Godhead and His expansion.
Read this verse on Vedabase.ioThis verse has no purport; its meaning is explained by the verses around it.