Adhyāya 141 — Night duels: Śaineya and Bhūriśravas; Droṇi and Ghaṭotkaca; Bhīma and Duryodhana
धनंजयस्तथा यान्तं पृष्ठतो द्रौणिमभ्यगात्
dhanañjayastathā yāntaṃ pṛṣṭhato drauṇimabhyagāt
サञ्जयは言った。ついでダナञ्जయ(アルジュナ)は、退きつつあるドラウニ(アシュヴァッターマン)に背後から迫った——容赦なき戦の流れの中で追撃を強め、危険な敵を抑えねばならぬ義務がためらいを押しのけたのである。
संजय उवाच
In a dharmic war context, a warrior’s responsibility includes actively restraining a perilous adversary; timely action and vigilance can be ethically required when inaction would enable further harm.
Sañjaya reports that Arjuna closes in on Aśvatthāman from behind while Aśvatthāman is moving ahead/away, indicating a chase or tactical approach during the ongoing combat.