This is a quotation from Śrīmad-Bhāgavatam (SB 10.89.58) concerning Kṛṣṇa’s endeavor to take Arjuna beyond the material universe when Arjuna was searching for the sons of a brāhmaṇa.
Lord Mahā-Viṣṇu, who is situated beyond this material world, was also attracted by the bodily features of Kṛṣṇa. Mahā-Viṣṇu had actually stolen the sons of the brāhmaṇa in Dvārakā so that Kṛṣṇa and Arjuna would come visit Him. This verse is quoted to show that Kṛṣṇa is so attractive that He attracts Mahā-Viṣṇu.