इति श्रीमहाभारते द्रोणपर्वणि जयद्रथवधपर्वणि सात्यकिकप्रवेशे एकविंशत्यधिकशततमो<ध्याय:
iti śrīmahābhārate droṇaparvaṇi jayadrathavadhaparvaṇi sātyakikapraveśe ekaviṁśatyadhikaśatatamo 'dhyāyaḥ
Thus, in the Śrī Mahābhārata, within the Droṇa Parva—specifically in the section concerning the slaying of Jayadratha—this concludes the one-hundred-and-twenty-first chapter, themed around Sātyaki’s entry (into the battle formation). As a colophon, it signals a transition in the war narrative, marking the close of a unit of action and the moral weight of the ensuing events tied to vengeance, duty, and the escalating costs of war.
संजय उवाच
As a colophon rather than a didactic verse, it teaches indirectly: actions in war are organized into accountable narrative units, and each completed episode carries ethical residue—duty pursued through violence (especially vengeance-driven duty) advances the plot but also deepens the moral gravity of the conflict.
This line marks the formal close of a chapter in the Droṇa Parva, within the Jayadratha-slaying sequence, identifying the chapter’s focus as Sātyaki’s entry/advance. It functions as an editorial/narrative boundary rather than describing a new action.