BhG 1.38-39

syntax

he janārdana (O Janārdana!),
yady api (even if) ete (these) lobhopahata-cetasaḥ (whose minds are affected by greed) kula-kṣaya-kṛtaṁ (done by the destruction of family) doṣaṁ (the evil) na paśyanti (they do not see),
mitra-drohe ca (and in the hostility to friends) pātakaṁ (sin) [na paśyanti] (they do not see),
[tathā api] (even thus) asmābhiḥ (by us) kula-kṣaya-kṛtaṁ (done by the destruction of family) doṣaṁ (the evil) prapaśyadbhiḥ (by those who understand),
asmāt (from this) pāpāt (from sin) nivartitum (to turn back) kathaṁ (how?) na jñeyam (not to be learnt?)

grammar

yadi	–	av. – if (correlative of: tarhi);
api	–	av. – although, moreover, besides, even;
ete	–	etat sn. 1n.3 m. – these;
na	–	av. – not;
paśyanti	–	√dṛś (to see) Praes. P 1v.3 – they see;
lobhopahata-cetasaḥ	–	lobha-upahata-cetas 1n.3 m.; BV: yeṣāṁ ceto lobhenaupahatam asti te – whose minds are affected by greed (from: √lubh – to be greedy, lobha – greed, covetousness; upa-√han – to strike, to beat, to afflict, PP upahata – struck, hurt, affected, misled; √cit – to perceive, to think, cetas – mind, thought, heart, consciousness);
kula-kṣaya-kṛtam	–	kula-kṣaya-kṛta 2n.1 m.; TP: kulasya kṣayeṇa kṛtam iti – done by the destruction of family (from: kula – tribe, family; √kṣi – to decrease, PF kṣaya – diminution, destruction; √kṛ – to do, PP kṛta – done, made);
doṣam	–	doṣa 2n.1 m. – evil, fault, guilt (from: √duṣ – to become corrupted);
mitra-drohe	–	mitra-droha 7n.1 m.; TP: mitrāṇāṁ droha iti – in hostility to friends (from: mitra – friend, companion; √druh – to hurt, to be hostile, droha – injury, harm);
ca	–	av. – and;
pātakam	–	pātaka 2n.1 n. – that which causes to fall: crime, sin (from: √pat – to fall, PP pāta – fall);

******

katham	–	av. – how?, in what manner?;
na	–	av. – not;
jñeyam	–	jñeya (√jñā – to know, to understand) PF 1n.1 n. – to be known, to be learnt;
asmābhiḥ	–	asmat sn. 3n.3 – by us;
pāpāt	–	pāpa 5n.1 n. – from evil, from sin;
asmāt	–	idam sn. 5n.1 n. – from this;
nivartitum	–	ni-√vṛt (to stop, to turn back) inf. – to stop, to turn back;
kula-kṣaya-kṛtam	–	kula-kṣaya-kṛta 2n.1 m.; TP: kulasya kṣayeṇa kṛtam iti – done by the destruction of family (from: kula – tribe, family; √kṣi – to decrease, PF kṣaya – diminution, destruction; √kṛ – to do, PP kṛta – done, made);
doṣam	–	doṣa 2n.1 m. – evil, fault, guilt (from: √duṣ – to become corrupted);
prapaśyadbhiḥ	–	pra-paśyant (pra–√dṛś – to see clearly) PPr 3n.3 m. – by those who see, who understand;
janārdana	–	jana-ardana 8n.1 m. – exciting / agitating people, O Janārdana (from: √jan – to be born, to produce, jana – man, people, creature; √ard – to torment, to hurt, ardana – tormenting, destroying) or BV: yo janānām abhadram ardati saḥ – one who destroys inauspiciousness of people;

textual variants

yady apy ete → yadyathā te (what more if they…);
kula-kṣaya-kṛtaṁ doṣaṁ→ kula-kṣata-kṛtaṁ pāpaṁ (sin done by killing the family);
kula-kṣaya-kṛtaṁ → kula-kṣata-kṛtaṁ (done by killing the family);
prapaśyadbhir → saṁpaśyadbir (by those who see well);

Śāṁkara

no commentary up to the verse BhG 2.10

Rāmānuja

no commentary up to the verse BhG 1.47

Madhva

no commentary up to the verse BhG 2.11

Śrīdhara

Śrīdhara: nanu tavaiteṣām api bandhu-vadha-doṣe samāne sati yathaivaite bandhu-vadha-doṣam aṅgīkṛtyāpi yuddhe pravartate | tathaiva bhavān api pravartatāṃ kim anena viṣādenety ata āha yadyapīti dvābhyām | rājya-lobhenopahataṃ bhraṣṭa-vivekaṃ ceto yeṣāṃ te ete duryodhanādayo yadyapi doṣaṃ na paśyanti, tathāpi asmābhir doṣaṃ prapaśyadbhir asmāt pāpāt nivartituṃ kathaṃ na jñeyaṃ nivṛttāv eva buddhiḥ kartavyety arthaḥ
tam eva doṣaṃ darśayati kula-kṣaya ity ādi | sanātanāḥ parasparāprāptāḥ | uta api avaśiṣṭaṃ kṛtsnam api kulam adharmo ‚bhibhavati vyāpnotīty arthaḥ

Viśvanātha

nanv ete tarhi kathaṃ yuddhe vartante | tatrāha yadyapīti
kula-kṣaya iti sanātanāḥ kula-parasparā-prāptatvena bahu-kālataḥ prāptā ity arthaḥ

Baladeva

nanu āhūto na nivarteta dyūtād api raṇād api viditaṃ kṣatriyasyeti kṣatra-dharma-smaraṇāt tair āhūtānāṃ bhavatāṃ yuddhe pravṛttir yukteti cet tatrāha yadyapīhi dvābhyām | pāpe pravṛttau lobhas teṣāṃ hetur asmākaṃ tu lobha-virahān na tatra pravṛttir iti | iṣṭa-sāvadhānatā-jñānaṃ khalu pravartakam | iṣṭaṃ cāniṣṭān anubandhi-vācyam | yad uktam –
phalato ‚pi ca yat karma nānārthenānubadhyate |
kevala-prīti-hetutvāt tad-dharm iti kathyate || iti |
tathā ca śyenenābhicaran yajeta ity ādi śāstrokte ‚pi śyenādāv ivāniṣṭānubandhitvād yuddhe ‚smin naḥ pravṛttir na yukteti | āhūta ity ādi śāstraṃ tu kula-kṣaya-doṣaṃ vinā bhūta-viṣayaṃ bhāvi | he janārdaneti prāgvat
doṣam eva prapañcayati kula-kṣaya iti | kula-dharmāḥ kulocitā agni-hotrādayo dharmāḥ sanātanāḥ kula-paraspara-prāptāḥ praṇaśyanti kartur vināśāt | utety apy arthe kṛtsnam ity anena sambadhyate | dharme naṣṭe saty avaśiṣṭaṃ bālādi-kṛtsnam api kulam adharmo ‚bhibhavati satīty arthaḥ