महाभारतः mahābhārataḥ - book-12, chapter-313, verse-15

तपसा गुरुवृत्त्या च ब्रह्मचर्येण चाभिभो ।
देवतानां पितॄणां चाप्यनृणश्चानसूयकः ॥१५॥

15. tapasā guruvṛttyā ca brahmacaryeṇa cābhibho ,
devatānāṁ pitṝṇāṁ cāpyanṛṇaścānasūyakaḥ.

15. tapasā guruvṛttyā ca brahmacaryeṇa ca abhibho
devatānām pitṝṇām ca api anṛṇaḥ ca anasūyakaḥ

15. abhibho tapasā ca guruvṛttyā ca brahmacaryeṇa ca
devatānām ca pitṝṇām ca api anṛṇaḥ ca anasūyakaḥ

15. And, O venerable one (abhibho), through ascetic practice (tapas), diligent service to the guru, and the observance of celibacy (brahmacarya), he should also become free from his obligations to the deities and ancestors, and be free from envy.

Words meanings summery:

• तपसा (tapasā) - by ascetic practice, by austerity

• गुरुवृत्त्या (guruvṛttyā) - by service to the guru, by the conduct of a disciple

• च (ca) - and

• ब्रह्मचर्येण (brahmacaryeṇa) - by celibacy, by the life of a Vedic student

• च (ca) - and

• अभिभो (abhibho) - O venerable one, O master

• देवतानाम् (devatānām) - of the deities, of the gods

• पितॄणाम् (pitṝṇām) - of the ancestors, of the fathers

• च (ca) - and

• अपि (api) - also, even

• अनृणः (anṛṇaḥ) - free from debt, unindebted

• च (ca) - and

• अनसूयकः (anasūyakaḥ) - not envious, free from malice

Words meanings and morphology

तपसा (tapasā) - by ascetic practice, by austerity

(noun)

Instrumental, neuter, singular of tapas

tapas - asceticism, austerity, penance, heat

गुरुवृत्त्या (guruvṛttyā) - by service to the guru, by the conduct of a disciple

(noun)

Instrumental, feminine, singular of guruvṛtti

guruvṛtti - conduct or service proper to a guru or to a disciple for his guru

Compound type : tatpuruṣa (guru+vṛtti)

• guru – teacher, spiritual preceptor, venerable
  noun (masculine)
• vṛtti – conduct, behaviour, mode of life, service
  noun (feminine)
  Derived from root vṛt + ktin suffix
  Root: vṛt (class 1)

च (ca) - and

(indeclinable)

ब्रह्मचर्येण (brahmacaryeṇa) - by celibacy, by the life of a Vedic student

(noun)

Instrumental, neuter, singular of brahmacarya

brahmacarya - celibacy, chaste life, studentship (especially a Vedic student's period of celibacy and study)

Compound type : tatpuruṣa (brahman+carya)

• brahman – Brahman (the Absolute), sacred word, Veda, priestly class
  noun (neuter)
• carya – to be practiced, to be observed; conduct, observance
  noun (neuter)
  Gerundive
  Derived from root car + ṇyat suffix
  Root: car (class 1)

च (ca) - and

(indeclinable)

अभिभो (abhibho) - O venerable one, O master

(noun)

Vocative, masculine, singular of abhibhu

abhibhu - lord, master, conqueror; venerable

Prefix: abhi

Root: bhū (class 1)

देवतानाम् (devatānām) - of the deities, of the gods

(noun)

Genitive, feminine, plural of devatā

devatā - deity, god, divinity

पितॄणाम् (pitṝṇām) - of the ancestors, of the fathers

(noun)

Genitive, masculine, plural of pitṛ

pitṛ - father, ancestor

च (ca) - and

(indeclinable)

अपि (api) - also, even

(indeclinable)

अनृणः (anṛṇaḥ) - free from debt, unindebted

(adjective)

Nominative, masculine, singular of anṛṇa

anṛṇa - free from debt or obligation

Compound type : nañ-tatpuruṣa (an+ṛṇa)

• an – not, un- (negative prefix)
  indeclinable
• ṛṇa – debt, obligation
  noun (neuter)

च (ca) - and

(indeclinable)

अनसूयकः (anasūyakaḥ) - not envious, free from malice

(adjective)

Nominative, masculine, singular of anasūyaka

anasūyaka - not envious, free from jealousy or malice

Compound type : nañ-tatpuruṣa (an+asūyaka)

• an – not, un- (negative prefix)
  indeclinable
• asūyaka – envious, jealous, malicious
  adjective (masculine)
  Derived from root asūy + ṇvul suffix
  Root: asūy (class 10)