Shloka 5
गोमूल्यनिर्णयः — The Determination of Value through the Cow
Nahuṣa–Cyavana Episode
परं शवाद् ब्राह्मणस्यैव पुत्र: शूद्रापुत्रं पारशवं तमाहु: । शुश्रूषक: स्वस्य कुलस्य स स्यात् स्वचारित्रं नित्यमथो न जह्यात्
paraṁ śavād brāhmaṇasyaiva putraḥ śūdrāputraṁ pāraśavaṁ tam āhuḥ | śuśrūṣakaḥ svasya kulasya sa syāt svacāritraṁ nityam atho na jahyāt ||
ビーシュマは言った。「シュードラの女から生まれた婆羅門の子は、『シャヴァ』（堕落したシュードラ）よりも勝るとされる。ゆえに賢者たちは彼を『パーラシャヴァ』と呼ぶ。彼は自らの家系に仕える侍従となり、この奉仕という慣習の規律を決して捨ててはならぬ。」
भीष्म उवाच
Educational Q&A
The verse frames a dharma-śāstra style norm: a person identified as Pāraśava (Brahmin father, Śūdra mother) is assigned a life of service to the family/lineage and is urged to maintain that customary discipline without abandoning it.
In Anuśāsana Parva, Bhīṣma is instructing Yudhiṣṭhira on social and ethical duties. Here he explains a specific mixed-varṇa designation (Pāraśava) and prescribes the conduct expected of such a person—namely, continued service within the household/lineage.