A highly blessed Kshatriya or a Vaishya, who renounces the duties of his order, and follows the practices of a Shudra, falls away from his own order and becomes a person of mixed caste. It is in this way that a Brahmana, or a Kshatriya, or a Vaishya, comes by the position of a Shudra.
क्षत्रियो वा महाभागे वैश्यो वा धर्मचारिणि। स्वानि कर्माण्यपाहाय शूद्रकर्म निषेवते॥ स्वस्थानात् स परिभ्रष्टो वर्णसंकरतां गतः। ब्राह्मणः क्षत्रियो वैश्यः शूद्रत्वं याति तादृशः॥