Gaṅgā-māhātmya: Siddha–Śilavṛtti-saṃvāda and Gaṅgā-stava (गङ्गामाहात्म्यं—सिद्ध-शिलवृत्ति-संवादः)
आत्मजां रूपसम्पन्नां महतीं सदृशे वरे | न प्रयच्छति य: कन्यां त॑ विद्याद् ब्रद्मघातिनम्,जो अपनी रूपवती कन्याकी बड़ी उम्र हो जानेपर भी उसका योग्य वरके साथ विवाह नहीं करता, उसे ब्रह्महत्यारा जाने
Bhīṣma uvāca | ātmajāṃ rūpasampannāṃ mahatīṃ sadṛśe vare | na prayacchati yaḥ kanyāṃ taṃ vidyād brahmaghātinam ||
भीष्म उवाच—आत्मजां रूपसम्पन्नां महतीं सदृशे वरे । न प्रयच्छति यः कन्यां तं विद्याद् ब्रह्मघातिनम् ॥
भीष्म उवाच
A guardian has a serious dharmic obligation to arrange a mature daughter’s marriage to a suitable man; willful neglect of this duty is condemned as a grave moral offense, likened to brahmahatyā.
In Bhīṣma’s instruction on dharma (Anuśāsana Parva), he lays down a rule of conduct for householders/guardians, warning that failing to marry off one’s grown daughter to an appropriate bridegroom incurs severe sin.