Caitanya-caritāmṛta 3.72
advaita, nityānanda — caitanyera dui aṅga aṅgera avayava-gaṇa kahiye upāṅga
[advaita, nityaananda — chaitanyera dui anga angera avayava-gana kahiye upaanga]
Blended reading (Sanskrit + English inline)
advaita, nityānanda — caitanyera dui aṅga aṅgera avayava-gaṇa kahiye upāṅga
Śrī Advaita Prabhu and Śrī Nityānanda Prabhu are both plenary portions of Lord Caitanya. Thus They are the limbs [aṅgas] of His body. The parts of these two limbs are called the upāṅgas.
My note
Source: vedabase.io