BhG 17.11

syntax

aphalākāṅkṣibhiḥ (by those not expecting the fruit) yaṣṭavyam eva iti (indeed to be offered)
manaḥ (the mind) samādhāya (after concentrating)
yaḥ vidhi-dṛṣṭaḥ (in which the rules are seen) yajñaḥ (sacrifice) ijyate (is offered),
saḥ sāttvikaḥ [yajñaḥ asti] (this is a sattvic sacrifice).

grammar

aphalākāṅkṣibhiḥ	–	a-phala-ākāṅkṣin 3n.3 m.; TP: ye phalaṁ nākāṅkṣanti taiḥ – by those not expecting the fruit (from: √phal – to ripen; phala – fruit, result; ā-√kāṅkṣ – to desire, to expect, ākāṅkṣā – eager desire, longing; -in, -min, -vin – sufixes meaning one who possesses);
yajñaḥ	–	yajña 1n.1 m. – sacrifice, worship (from: √yaj – to consecrate, to sacrifice, to worship);
vidhi-dṛṣṭaḥ	–	vidhi-dṛṣṭa 1n.1 m.; BV: yasmin vidhayo dṛṣṭāḥ santi saḥ – in which the rules are seen (from: vidhi – a rule, formula, injunction; √dṛś – to see, PP dṛṣṭa – seen);
yaḥ	–	yat sn. 1n.1 m. – he who;
ijyate	–	√yaj (to consecrate, to sacrifice, to worship) Praes. pass. 1v.1 – it is offered;
yaṣṭavyam	–	yaṣṭavya (√yaj – to consecrate, to sacrifice, to worship) PF 1n.1 m. – it is to be offered;
eva	–	av. – certainly, just, merely;
iti	–	av. – thus (used to close the quotation);
manaḥ	–	manas 2n.1 n. – the mind (from: √man – to think);
samādhāya	–	sam-ā-√dhā (to put, to fix, to compose, to concentrate) absol. – after concentrating;
saḥ	–	tat sn. 1n.1 m. – he;
sāttvikaḥ	–	sāttvika 1n.1 m. – related to sattva, sattvic (from: √as – to be, PPr sant – being, existing, true, the essence, abst. sattva – being, essence, wisdom, spirit, one of the three guṇas);

textual variants

aphalākāṅkṣibhir → aphalākāṁkṣiṇā (by one not expecting the fruit);
vidhi-dṛṣṭo → vidhi-diṣṭo (settled by the rules) – not in critical edition but found eg. in Śrīdhara’s commentary;
ya ijyate → na yujyate (it does not become);
yaṣṭavyam → yaṣṭavya (it is to be offered m.);
eveti → ityeva (thus indeed);
manaḥ → tataḥ (thus);
sāttvikaḥ → sāttvikam (sattvic);

Śāṃkara

athedānīṃ yajñas trividha ucyate—
aphalākāṅkṣibhir aphalārthibhir yajño vidhi-dṛṣṭaḥ śāstra-codanādṛṣṭau yo yajña ijyate nirvartyate, yaṣṭavyam eveti yajña-svarūpa-nirvartanam eva kāryam iti manaḥ samādhāya, nānena puruṣārtho mama kartavya ity evaṃ niścitya, sa sāttviko yajña ucyate

Rāmānuja

phalākāṅkṣārahitaiḥ puruṣaiḥ vidhidṛṣṭaḥ śāstradṛṣṭaḥ mantradravyakriyādibhir yuktaḥ, yaṣṭavyam eveti bhagavadārādhanatvena svayaṃprayojanatayā yaṣṭavyam iti manas samādhāya yo yajña ijyate, sa sāttvikaḥ

Śrīdhara

yajño ‚pi trividhaḥ | tatra sāttvikaṃ yajñam āha aphalākāṅkṣibhir iti | phalākāṅkṣā-rahitaiḥ puruṣair vidhinādiṣṭa āvaśyakatayā vihito yo yajña ijyate ‚nuṣṭhīyate sa sāttviko yajñaḥ | katham ijyate | yaṣṭavyam eveti | yajñānuṣṭhānam eva kāryam | nānyat phalaṃ sādhanīyam ity evaṃ manaḥ samādhāyaikāgraṃ kṛtvety arthaḥ

Madhusūdana

idānīṃ krama-prāptaṃ trividhaṃ yajñam āha aphaleti tribhiḥ | agnihotra-darśapūrṇamāsa-cāturmāsya-paśu-bandha-jyotiṣṭomādir yajño dvividhaḥ kāmyo nityaś ca | phala-saṃyogena coditaḥ kāmyaḥ sarvāṅgopasaṃhāreṇaiva mukhya-kalpenānuṣṭheyaḥ | phala-saṃyogaṃ vinā jīvanādi-nimitta-saṃyogena coditaḥ sarvāṅgopasaṃhārāsambhave pratinidhy-ādy-upādānenāmukhya-kalpenāpy anuṣṭheyo nityaḥ | tatra sarvāṅgopasaṃhārāsambhave ‚pi pratinidhim upādāyāvaśyaṃ yaṣṭavyam eva pratyavāya-parihārāyāyāvaśyaka-jīvanādi-nimittena coditatvād iti manaḥ samādhāya niścityāphalākāṅkṣibhir antaḥ-karaṇa-śuddhy-arthitayā kāmya-prayoga-vimukhair vidhi-dṛṣṭo yathā-śāstraṃ niścito yo yajña ijyate ‚nuṣṭhīyate sa yathā-śāstram antaḥ-karaṇa-śuddhy-artham anuṣṭhīyamāno nitya-prayogaḥ sāttviko jñeyaḥ

Viśvanātha

atha yajñasya traividhyam āha aphalākāṅkṣibhir iti | phalākāṅkṣā-rāhitye kathaṃ yajñe pravṛttir ata āha — yaṣṭavyam eveti | svānuṣṭheyatvena śāstroktatvād avaśya-kartavyam etad iti manaḥ samādhāya

Baladeva

atha yajña-traividhyam āha aphaleti tribhiḥ | aphalākāṅkṣibhiḥ phalecchā-śūnyair yo yajña ijyate kriyate vidhi-dṛṣṭo vidhi-vākyāj jātaḥ sa sāttvikaḥ | nanu phalecchāṃ vinā tatra kathaṃ pravṛttis tatrāha yaṣṭavyam eveti | māṃ prati vedenoktatvāt tat yajanam eva kāryaṃ, na tu tena phalaṃ sādhyam iti manaḥ samādhāyaikāgraṃ kṛtvety arthaḥ