It is said that Cupid, who is directly part and parcel of Lord Vāsudeva and who was formerly burned to ashes by the anger of Lord Śiva, took birth in the womb of Rukmiṇī begotten by Kṛṣṇa. This is Kāmadeva, a demigod of the heavenly planets especially capable of inducing lusty desires. The Supreme Personality of Godhead, Kṛṣṇa, has many grades of parts and parcels, but the quadruple expansions of Kṛṣṇa--Vasudeva, Saṅkarṣaṇa, Pradyumna and Aniruddha--are directly in the Viṣṇu category. Kāma, or the Cupid demigod, who later on took his birth in the womb of Rukmiṇī, was also named Pradyumna, but he cannot be the Pradyumna of the Viṣṇu category. He belongs to the category of jīva-tattva, but for special power in the category of demigods, he was a part and parcel of the super prowess of Pradyumna. That is the verdict of the Gosvāmīs. Therefore, when Cupid was burned into ashes by the anger of Lord Śiva, he merged into the body of Vasudeva, and in order to get his body again, he was begotten by Lord Kṛṣṇa Himself; he was directly released from his body in the womb of Rukmiṇī and was born as the son of Kṛṣṇa, celebrated by the name Pradyumna. Because he was begotten by Lord Kṛṣṇa directly, his qualities were most similar to those of Kṛṣṇa.