BhG 18.36

syntax

he bharatarṣabha (O best of the Bharatas!),
idānīm tu (but now) [tvam] (you) tri-vidham sukham (threefold happiness) me (from me) śṛṇu (you must listen).
yatra [sukhe] (in which happiness) [puruṣaḥ] (a person) abhyāsāt (from practice) ramate (he rejoices),
duḥkhānta ca (and end of distress) nigacchati (he obtains).

grammar

sukham	–	sukha 2n.1 n. – pleasure, comfort (from: su – prefix: good, excellent, beautiful, virtuous; kha – cavity, hole, nave; su-kha – joy, happiness, literally: good hole in the nave [of a wheel through which an axis runs] that makes the moving smooth; or from: su-√sthā; opposite to: duḥkha – pain, difficulty);
tu	–	av. – but, then, or, and;
idānīm	–	av. – now, today;
tri-vidham	–	tri-vidha 2n.1 n. – threefold, of three parts (from: tri – three; vi-√dhā – to divide, vidhā – division, part);
śṛṇu	–	√śru (to hear, to listen) Imperat. P 2v.1 – you must listen;
me	–	asmat sn. 6n.1 – my (shortened form of: mama);
bharata-rṣabha	–	bharata-rṣabha 8n.1 m.; TP: bharatāṇāṁ ṛṣabha iti – O best of the Bharatas (from: √bhṛ – to hold or bharata – king Bharata, maintained, actor, in plural – the descendants of Bharata; ṛṣabha – bull, the best of any kind);
abhyāsāt	–	abhy-āsa 5n.1 m. – from repetition, from practice, from discipline (from: abhi-√as – to repeat, to study);
ramate	–	√ram (to play, to rejoice) Praes. Ā 1v.1 – he rejoices;
yatra	–	av. – where, in which place, when (correlative of: tatra);
duḥkhāntam	–	duḥkha-anta 2n.1 m.; TP: duḥkhasyāntam iti – end of distress (from: dur / dus – prefix: difficult, bad, hard; duḥ-kha – pain, difficulty; literally: bad hole in the nave [of a wheel through which an axis runs] that makes the moving not smooth; anta – the end, limit, boundary, death);
ca	–	av. – and;
nigacchati	–	ni-√gam (to obtain) Praes. P 1v.1 – he obtains;

textual variants

tri-vidhaṁ interchanges with śṛnu me;
ca nigacchati → ca niyacchati / na nigacchati / ca na gacchati (and he obtains / he does not obtain / and he does not go);

Śāṃkara

guṇa-bhedena kriyāṇāṃ kārakāṇāṃ ca tri-vidho bheda uktaḥ | athedānīṃ phalasya sukhasya tri-vidho bheda ucyate—
sukhaṃ tv idānīṃ tri-vidhaṃ śṛṇu samādhānaṃ kurv ity etat, me mama bharatarṣabha | abhyāsāt paricayād āvṛtte ramate ratiṃ pratipadyate yatra yasmin sukhānubhave duḥkhāntaṃ ca duḥkhāvasānaṃ duḥkhopaśamaṃ ca nigacchati niścayena prāpnoti

Rāmānuja

commentary under the verse BhG 18.37

Śrīdhara

commentary under the verse BhG 18.37

Viśvanātha

commentary under the verse BhG 18.37

Baladeva

commentary under the verse BhG 18.37