Śrī Caitanya Caritamrta · Text Ādi 4.13
অতএব বিষ্ণু তখন কৃষ্ণের শরীরে ।
বিষ্ণুদ্বারে করে কৃষ্ণ অসুর–সংহারে ॥ ১৩ ॥
ataeva viṣṇu takhana kṛṣṇera śarīre
viṣṇu-dvāre kare kṛṣṇa asura-saṁhāre
At that time, therefore, Lord Viṣṇu is present in the body of Lord Kṛṣṇa, and Lord Kṛṣṇa kills the demons through Him.
Read this verse on Vedabase.ioThis verse has no purport; its meaning is explained by the verses around it.