Adhyāya 166: Kṛtaghna-doṣa (कृतघ्नदोषः) — the fault of ingratitude and the limits of expiation
नैव कन्या न युवतिर्नामन्त्रज्ञो न बालिश:
naiva kanyā na yuvatir nāmantrajño na bāliśaḥ
毗湿摩曰:“不可(视为可托付、可咨议者)唯是幼女,不可年轻女子,不可不谙咒法者,亦不可愚昧之人。”
भीष्म उवाच
The verse stresses discernment in seeking guidance: counsel should be taken from those who are mature, knowledgeable, and wise, not from the inexperienced or the foolish.
In Śānti Parva, Bhīṣma is instructing Yudhiṣṭhira on dharma and practical governance; here he lists categories of persons regarded (in that traditional context) as unsuitable for giving reliable counsel.