He rebuked Him with the following words: "O Kṛṣṇa! I heard that You are a great hero born in the dynasty of Yadu, but I see that You are running away from fighting, like a coward. It is not worthy of Your good name and family tradition." Kālayavana was following, running very fast, but still he could not catch Kṛṣṇa because he was not freed from all contaminations of sinful life.
According to Vedic culture, anyone who does not follow the regulative principles observed by the higher castes (the brāhmaṇas, kṣatriyas and vaiśyas) or even those observed by the laborer class (the śūdras) is called a mleccha or yavana. The Vedic social situation is so planned that persons accepted as śūdras can gradually be elevated to the position of brāhmaṇas by the cultural advancement known as saṁskāra, or the purificatory process. The verdict of the Vedic scriptures is that no one becomes a brāhmaṇa or a mleccha simply by birth; by birth everyone is accepted as a śūdra. One has to elevate himself by the purificatory process to the stage of brahminical life.