Caitanya-caritāmṛta 6.20
advaita-rūpe kare śakti-sañcāraṇa ataeva advaita hayena mukhya kāraṇa
[advaita-roope kare shakti-sanchaarana ataeva advaita hayena mukhya kaarana]
Blended reading (Sanskrit + English inline)
advaita-rūpe kare śakti-sañcāraṇa ataeva advaita hayena mukhya kāraṇa
In the form of Advaita He infuses the material ingredients with creative energy. Therefore, Advaita is the original cause of creation.
My note
Source: vedabase.io