Śrīmad-Bhāgavatam 10.77.2
Blended reading (Sanskrit + English inline)
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rukmiṇī-sutaḥ
—
the son of Rukmiṇī
Compound: rukmiṇī (Kṛṣṇa's first queen, Lakṣmī's expansion) + suta (son). Pradyumna is identified by His mother — Gauḍīyas read this as the standard rasic naming pattern of Vraja and Dvārakā: the son is His mother's, before he is anyone's general.
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smayan
—
smiling
Present participle of √smi. The Yadu warrior's smile in battle — the same mood as Kṛṣṇa's smile while killing Kaṁsa. Anger never becomes ugliness in those who fight for Bhagavān; the smile is the index of being unshaken.
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nārācaiḥ
—
with nārāca arrows
Iron-shafted arrows used by kṣatriyas in serious combat. The exactness of "eight" — one for each of Dyumān's vital points (vss. 3) — shows that even the Lord's son does not waste a shaft; every arrow lands by knowledge, not by spray.
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pratyavidhyāt
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He counter-pierced
Prati (back) + ava + √vyadh (to pierce). The grammar itself names the reply — Pradyumna does not initiate; He answers. Devotional kṣatriya-dharma is reactive on behalf of those one protects, not aggressive for one's own ends.
Śrīla Viśvanātha Cakravartī comments that Pradyumna challenged Dyumān, saying “Now see if you can strike Me!” After saying this and allowing Dyumān to shoot his weapons, Pradyumna released His own deadly arrows.
Saying "Oh, attack as long as you can!" he received Dyuman’s attack and then counter attacked (pratihatya), piercing him with eight arrows (naracaih).
He attacked Dyumān who had penetrated his army and pierced him in response to his attacks with special arrows. He smiled as a sign of his perseverance as a warrior. He was not angry. Thus his smiling is praised.
He attacked Dyumān who had penetrated his army and pierced him in response to his attacks, or on each limb (prati) with special arrows. He smiled as a sign of his perseverance as a warrior or to indicate that it was easy.
While the master was unconscious, Dyumān had been mowing down the army like a flame in dry grass; now Rukmiṇī's son returns and answers him not with rage but with a smile and eight nārāca arrows. Bhakti retaliates against māyā not by matching its fury but by precise, smiling counter-strokes from a steadied bow.
My note
Source: vedabase.io