BhG 11.50

syntax

saṁjayaḥ (Saṁjaya) uvāca (he spoke):
mahātmā (whose self is great) vāsudevaḥ (Vāsudeva) arjunam (to Arjuna) iti uktvā (thus after speaking)
bhūyaḥ (again) saumya-vapuḥ (pleasing form) bhūtvā (after being),
tathā (thus) svakam rūpam (own form) darśayāmāsa (he showed),
punaḥ ca (and again) enam bhītam (this afraid one) āśvāsayāmāsa (he caused to breath).

grammar

saṁjayaḥ	–	sam-jaya 1n.1 m. – conquest, complete victory, Saṁjaya  (from: sam-√ji – to conquer completely, jaya – victory);
uvāca	–	√vac (to speak) Perf. P 1v.1 – he spoke;
iti	–	av. – thus (used to close the quotation);
arjunam	–	arjuna 2n.1 m. – white, clear, Arjuna;
vāsudevaḥ	–	vāsudeva 1n.1 m. – son of Vasudeva (from: √vas – to dwell, vasu – wealth, one of eight Vasus; deva – god, divinity; vasudeva – father of Kṛṣṇa);
tathā	–	av. – in that manner, so, in like manner;
uktvā	–	√vac (to speak) absol. – after speaking;
svakam	–	svaka 2n.1 n. – own (from: sva – own);
rūpam	–	rūpa 2n.1 n. – shape, figure, beauty (from: √rūp – to form);
darśayāmāsa	–	√dṛś (to see) caus. Perf. (periphrastic) P 1v.1 – he showed;
bhūyaḥ	–	av. – more, again, besides;
āśvāsayāmāsa	–	ā-√śvas (to breath) caus. Perf. (periphrastic) P 1v.1 – he caused to breath, he consoled;
ca	–	av. – and;
bhītam	–	bhīta (√bhī – to scare) PP 2n.1 m. – afraid;
enam	–	etat sn. 2n.1 m. – this;
bhūtvā	–	√bhū (to be) absol. – after becoming;
punaḥ	–	av. – back, again
saumya-vapuḥ	–	saumya-vapus 1n.1 m.; BV: yasya vapuḥ saumyam asti saḥ – whose form is gentle (from: vapus – form, figure, beauty; √su – to extract, soma – juice, nectar, Moon, soma, saumya – related to nectar; gentle, mild);
mahātmā	–	mahā-ātman 1n.1 m.; BV: yasyātmā mahān asti saḥ – whose self is great (from: √mah – to magnify, mahant – great; ātman – self);

textual variants

saumya-vapur → kāmya-vapur (desired form);

Śāṃkara

ity evam arjunaṃ vāsudevas tathā-bhūtaṃ vacanam uktvā, svakaṃ vasudevasya gṛhe jātaṃ rūpaṃ darśayāmāsa darśitavān bhūyaḥ punaḥ | āśvāsayāmāsa ca āśvāsitavān bhītam enam, bhūtvā punaḥ saumya-vapuḥ prasanna-deho mahātmā

Rāmānuja

evaṃ pāṇḍutanayaṃ bhagavān vasudevasūnur uktvā bhūyaḥ svakīyam eva caturbhujaṃ rūpaṃ darśayām āsa; aparicitarupadarśanena bhītam enaṃ punar api paricitasaumyavapur bhūtvā āśvāsayām āsa ca, mahātmā satyasaṅkalpaḥ / asya sarveśvarasya paramapuruṣasya parasya brahmaṇo jagadupakṛtimartyasya vasudevasūnoś caturbhujam eva svakīyaṃ rūpam; kaṃsād bhītavasudevaprārthanena ākaṃsavadhād bhujadvayam upasaṃhṛtaṃ paścād āviṣkṛtaṃ ca / „jāto ‚si deva deveśa śaṅkhacakragadādhara / divyaṃ rūpam idaṃ deva prasādenopsaṃhara // ….. upasaṃhara viśvātman rūpam etac caturbhujam” iti hi prārthitam / śiśupālasyāpi dviṣato ‚navaratabhāvanāviṣayaś caturbhujam eva vasudevasūno rūpam, „udārapīvaracaturbāhuṃ śaṅkhacakragadādharam” iti / ataḥ pārthenātra tenaiva rūpeṇa caturbhujanety ucyate

Śrīdhara

evam uktvā prāktanam eva rūpaṃ mat-sakhaṃ prasannaṃ tava saumyaṃ janārdana idānīm adhunāsmi saṃvṛttaḥ saṃjātaḥ | kim ? sa-cetāḥ prasanna-cittaḥ | prakṛtiṃ svabhāvaṃ gataś cāsmi

Madhusūdana

vāsudevo ‚rjunam iti prāg-uktam uktvā yathā pūrvam āsīt tathā svakaṃ rūpaṃ kirīṭa-makara-kuṇḍala-gadā-cakrādi-yuktaṃ caturbhujaṃ śrīvatsa-kaustubha-vanamālā-pītāmbarādi-śobhitaṃ darśayāmāsa bhūyaḥ punar āśvāsayāmāsa ca bhītam enam arjunaṃ bhūtvā punaḥ pūrvavat saumya-vapur anugra-śarīro mahātmā parama-kāruṇikaḥ sarveśvaraḥ sarvajña ity ādi-kalyāṇa-guṇākaraḥ

Viśvanātha

yathā svāṃśasya mahogra-rūpaṃ darśayāmāsa | tathā mahā-madhuraṃ svakaṃ rūpaṃ caturbhujaṃ kirīṭa-gadā-cakrādi-yuktaṃ tat-prārthitaṃ madhuraiśvarya-mayaṃ bhūyo darśayāmāsa | tataḥ punaḥ sa mahātmā somya-vapuḥ kaṭaka-kuṇḍaloṣṇīṣa-pītāmbara-dharo dvibhujo bhūtvā bhītam enam āśvāsayāmāsa

Baladeva

tato yad abhūt tat saṃjaya uvāca ity arjunam iti | vāsudevo ‚rjunaṃ prati pūrvoktam uktvā yathā saṅkalpenaiva sahasra-śiraskaṃ rūpaṃ darśitavān tathaiva svakaṃ nīlotpala-śyāmalatvādi-guṇakaṃ devakī-putra-lakṣaṇaṃ caturbhujaṃ rūpaṃ darśayāmāsa evaṃ saumya-vapuḥ sundara-vigraho bhūtvā bhītam enam arjunaṃ punar āśvāsayāmāsa | mahātmā udāra-manā