idānīm - now; dvāpare - in the Dvāpara-yuga; tiṅho - He; hailā - was; kṛṣṇa-varṇa - blackish color; ei - these; saba - all; śāstra-āgama - and Vedic literatures; purāṇera - of the Purāṇas; marma - the core.

Now, in the Dvāpara-yuga, the Lord had descended in a blackish hue. This is the essence of the statements in the Purāṇas and other Vedic literatures with reference to the context.