BhG 18.77

syntax

hareḥ ca (and of Hari) tat aty-adbhutam rūpam (that very wonderful form) saṁsmṛtya saṁsmṛtya (after remembering)
me (my) mahān vismayaḥ [asti] (it is great amazement),
punaḥ punaḥ (again and again) [aham] (I) hṛṣyāmi (I rejoice).

grammar

tat	–	tat sn. 2n.1 n. – that;
ca	–	av. – and;
saṁsmṛtya saṁsmṛtya	–	sam-√smṛ (to remember fully, to remind) absol. – after remembering (repetition meaning continuity);
rūpam	–	rūpa 2n.1 n. – shape, figure, beauty (from: √rūp – to form);
aty-adbhutam	–	ati-adbhuta 1n.2 n. – very wonderful (from: ati – prefix: excessive; adbhuta – supernatural, marvellous, wonderful);
hareḥ	–	hari 6n.1 m. – of one who takes; of yellow, of reddish brown, of fire of sun, of lion, of monkey; of Hari (from: √hṛ – to carry away; Raghu-vaṁśa 3.49: harir yathaikaḥ puruṣottamaḥ smṛtaḥ – as Hari the best of men is known);
vismayaḥ	–	vismaya 1n.1 m. – wonder, surprise, perplexity (from: vi-√smi – to wonder, to be proud);
me	–	asmat sn. 6n.1 – my (shortened form of: mama);
mahān	–	mahant 1n.1 m. – great (√mah – to magnify);
rājan	–	rājan 8n.1 m. – O king! (from: √raj – to reign);
hṛṣyāmi	–	√hṛṣ (to be excited) Praes. P 3v.1 – I rejoice;
ca	–	av. – and;
punaḥ punaḥ	–	av. – again and again (repetition meaning continuity);

textual variants

saṁsmṛtya saṁsmṛtya → saṁsmṛtya paramaṁ (after remembering the supreme [form]);
mahān rājan → mahā-rāja (great king);
hṛṣyāmi → prahṛṣye (I rejoice);

Śāṃkara

tac ca saṃsmṛtya saṃsmṛtya rūpam atyadbhutaṃ hareḥ viśva-rūpaṃ vismayo me mahān rājan hṛṣyāmi ca punaḥ punaḥ

Rāmānuja

tac cārjunāya prakāśitam aiśvaraṃ harer atyadbhutaṃ rūpaṃ mayā sākṣātkṛtaṃ saṃsmṛtya saṃsmṛtya hṛṣyato me mahān vismayo jāyate; punaḥ punaś ca hṛṣyāmi

Śrīdhara

kiṃ ca tac ceti | viśva-rūpaṃ niridiśati | spaṣṭam anyat

Viśvanātha

commentary under the verse BhG 18.74

Baladeva

tac ca viśva-rūpaṃ yad arjunāyopadiṣṭam