Yudhishthira said The intermixture of castes is brought about through inducements offered by richies, or through mere lust, or through ignorance of the true order of birth.
युधिष्ठिर उवाच अर्थाल्लोभाद् वा कामाद् वा वर्णानां चाप्यनिश्चयात्। अज्ञानाद् वापि वर्णानां जायते वर्णसंकरः॥