भायश्षितस्रो विप्रस्य द्वयोरात्मा प्रजायते | आनुपूर्व्याद् द्वयोहीनौ मातृजात्यौ प्रसूयत:
bhāryāś catasro viprasya dvayor ātmā prajāyate | ānupūrvyād dvayohīnau mātṛjātyau prasūyataḥ ||
Bhishma said: “A Brahmin is said to have four wives. From two of them—a Brahmin woman and a Kshatriya woman—a son is born who is regarded as a Brahmin. But from the remaining two—when the wives are Vaishya and Shudra—any sons born are considered deficient in Brahmin status and are understood, in due order, to follow the mother’s caste.”
भीष्म उवाच
The verse states a normative rule attributed to Bhishma: in the context of a Brahmin’s four possible wives, offspring from a Brahmin or Kshatriya wife are treated as Brahmin, while offspring from Vaishya or Shudra wives are regarded as lacking full Brahmin status and are classified according to the mother’s caste.
During Bhishma’s extended instruction on dharma in the Anushasana Parva, he lays out traditional social-legal classifications concerning marriage and the status of children born from unions across varṇas, presenting an ordered scheme for how such offspring are to be regarded.