अधर्माभिभवात्कृष्ण प्रदुष्यन्ति कुलस्त्रियः। स्त्रीषु दुष्टासु वार्ष्णेय जायते वर्णसङ्करः ॥

adharmābhibhavāt kṛiṣhṇa praduṣhyanti kula-striyaḥ strīṣhu duṣhṭāsu vārṣhṇeya jāyate varṇa-saṅkaraḥ

Owing to predominance of lawlessness, O Krishna, the women of the family become corrupt; women corrupted, O Vârshneya, there ariseth caste confusion;

In plain words: Arjuna continues his argument to Krishna, here called Vārshneya, meaning "descendant of the Vrishni clan." He says that when a family loses its rules, its women go astray, and the social order of castes (inherited social classes) gets mixed up.