महाभारतः mahābhārataḥ - book-13, chapter-32, verse-14

प्रसन्नहृदयाश्चैव सर्वसत्त्वेषु नित्यशः ।
आ पृष्ठतापात्स्वाध्याये युक्तास्तान्पूजयाम्यहम् ॥१४॥

14. prasannahṛdayāścaiva sarvasattveṣu nityaśaḥ ,
ā pṛṣṭhatāpātsvādhyāye yuktāstānpūjayāmyaham.

14. prasannahṛdayāḥ ca eva sarvasattveṣu nityaśaḥ ā
pṛṣṭhatāpāt svādhyāye yuktāḥ tān pūjayāmi aham

14. aham tān pūjayāmi ye ca eva sarvasattveṣu nityaśaḥ
prasannahṛdayāḥ svādhyāye ā pṛṣṭhatāpāt yuktāḥ

14. I worship those who are always gracious at heart towards all beings and are engaged in self-study (svādhyāya) until their backs are scorched by the sun.

Words meanings summery:

• प्रसन्नहृदयाः (prasannahṛdayāḥ) - those with clear/pleased hearts, gracious-hearted

• च (ca) - and, also

• एव (eva) - indeed, certainly, only

• सर्वसत्त्वेषु (sarvasattveṣu) - towards all beings, among all creatures

• नित्यशः (nityaśaḥ) - constantly, always, perpetually

• आ (ā) - up to, until, including

• पृष्ठतापात् (pṛṣṭhatāpāt) - indicating long hours of study under the sun (from the burning of the back, until the back is scorched)

• स्वाध्याये (svādhyāye) - in self-study, in Vedic study

• युक्ताः (yuktāḥ) - engaged, devoted, yoked

• तान् (tān) - them

• पूजयामि (pūjayāmi) - I worship, I honor

• अहम् (aham) - I

Words meanings and morphology

प्रसन्नहृदयाः (prasannahṛdayāḥ) - those with clear/pleased hearts, gracious-hearted

(adjective)

Nominative, masculine, plural of prasannahṛdaya

prasannahṛdaya - one whose heart is pleased/clear/gracious

Compound type : bahuvrīhi (prasanna+hṛdaya)

• prasanna – clear, bright, pleased, gracious, tranquil
  adjective (masculine)
  Past Passive Participle
  Derived from pra- + √sad (to sit, settle) with suffix -na
  Prefix: pra
  Root: sad (class 1)
• hṛdaya – heart, mind, soul
  noun (neuter)

च (ca) - and, also

(indeclinable)

एव (eva) - indeed, certainly, only

(indeclinable)

Note: Emphatic particle.

सर्वसत्त्वेषु (sarvasattveṣu) - towards all beings, among all creatures

(noun)

Locative, masculine, plural of sarvasattva

sarvasattva - all beings, all creatures

Compound type : karmadhāraya (sarva+sattva)

• sarva – all, every
  adjective (masculine)
• sattva – being, creature, existence, essence, goodness
  noun (neuter)
  Derived from root as (to be) with suffix -tva
  Root: as (class 2)

नित्यशः (nityaśaḥ) - constantly, always, perpetually

(indeclinable)

Derived from nitya (constant) with suffix -śas

Note: -śas suffix indicates 'in this manner' or 'repeatedly'.

आ (ā) - up to, until, including

(indeclinable)

Preposition indicating limit or extent

Note: Used here with ablative pṛṣṭhatāpāt.

पृष्ठतापात् (pṛṣṭhatāpāt) - indicating long hours of study under the sun (from the burning of the back, until the back is scorched)

(noun)

Ablative, masculine, singular of pṛṣṭhatāpa

pṛṣṭhatāpa - burning of the back, heat on the back

Compound type : tatpuruṣa (pṛṣṭha+tāpa)

• pṛṣṭha – back, surface, top
  noun (neuter)
• tāpa – heat, burning, pain, torment
  noun (masculine)
  Derived from root tap (to heat, burn)
  Root: tap (class 1)

Note: Literal meaning is 'from the burning of the back', used idiomatically to denote long hours of study under the sun.

स्वाध्याये (svādhyāye) - in self-study, in Vedic study

(noun)

Locative, masculine, singular of svādhyāya

svādhyāya - self-study, recitation of sacred texts, Vedic study

Compound type : tatpuruṣa (sva+adhyāya)

• sva – own, self
  adjective (masculine)
• adhyāya – reading, study, lesson, chapter
  noun (masculine)
  Derived from adhi- + √i (to go, read)
  Prefix: adhi
  Root: i (class 2)

युक्ताः (yuktāḥ) - engaged, devoted, yoked

(adjective)

Nominative, masculine, plural of yukta

yukta - joined, united, engaged in, endowed with, appropriate

Past Passive Participle

Derived from root yuj (to join, connect) with suffix -ta

Root: yuj (class 7)

तान् (tān) - them

(pronoun)

Accusative, masculine, plural of tad

tad - that, he, she, it

पूजयामि (pūjayāmi) - I worship, I honor

(verb)

1st person , singular, active, present (laṭ) of pūj

Present Tense

Root pūj, 10th class, parasmaipada

Root: pūj (class 10)

अहम् (aham) - I

(pronoun)

Nominative, singular of asmad

asmad - I, we