Shloka 12
Brahmaśirastra-pratisaṃhāra — Retraction and redirection of the supreme weapon
Sauptika Parva, Adhyāya 15
अशक्तः प्रतिसंहारे परमास्त्रस्य संयुगे । द्रौणिदीनमना राजन् द्वैपधायनमभाषत
aśaktaḥ pratisaṃhāre paramāstrasya saṃyuge | drauṇidīnamanā rājan dvaipadhāyanam abhāṣata ||
毗舍波衍那说：大王啊，在战阵之中，阿湿婆他曼既不能收回、也不能止息那已放出的至上天兵，心中便沉郁悲苦；他忧惧交加，遂对毗耶娑（岛生者·德瓦派亚那）如此说道。
वैशम्पायन उवाच
Educational Q&A
The verse highlights moral accountability in warfare: deploying overwhelming power without the capacity (or discipline) to restrain it leads to anguish and danger. It implies that true dharma includes foresight, self-control, and seeking wise guidance when one’s actions threaten wider harm.
During the aftermath of the night massacre, Aśvatthāman has invoked a supreme celestial weapon but cannot perform its withdrawal (pratisaṃhāra). Distressed, he turns to the sage Vyāsa (Dvaipāyana) and speaks to him, indicating a crisis caused by an uncontrollable weapon in the battlefield context.