Brahmaśirastra-pratisaṃhāra — Retraction and redirection of the supreme weapon
Sauptika Parva, Adhyāya 15
अचीर्णब्रिह्यचर्यो य: सूष्टवा वर्तयते पुन: । तदस्त्रं सानुबन्धस्य मूर्थानं तस्य कृन्तति
acīrṇa-brahmacaryo yaḥ sūṣṭvā vartayate punaḥ | tad astraṃ sānubandhasya mūrdhānaṃ tasya kṛntati ||
Dijo Vaiśampāyana: Si un hombre que no ha observado la disciplina del brahmacarya emplea esa arma y luego intenta retirarla y llamarla de vuelta, el misil se vuelve contra él; junto con todos sus dependientes y parientes, le cercena la cabeza. El relato subraya que las armas sagradas están regidas por frenos morales: el poder usado sin autocontrol rebota como ruina, no como victoria.
वैशम्पायन उवाच
Extraordinary power (astra-vidyā) is inseparable from moral qualification. Without brahmacarya-like restraint and purity, even a successfully launched weapon becomes self-destructive, harming the user and those bound to him.
The text explains a rule about a potent weapon: if an unqualified person—one lacking brahmacarya—uses it and then attempts to recall/withdraw it, the weapon rebounds and beheads him along with his dependents/relations, emphasizing the peril of improper ritual-ethical conduct in warfare.