महाभारतः mahābhārataḥ - book-3, chapter-82, verse-84

कृष्णशुक्लावुभौ पक्षौ गयायां यो वसेन्नरः ।
पुनात्यासप्तमं राजन्कुलं नास्त्यत्र संशयः ॥८४॥

84. kṛṣṇaśuklāvubhau pakṣau gayāyāṁ yo vasennaraḥ ,
punātyāsaptamaṁ rājankulaṁ nāstyatra saṁśayaḥ.

84. kṛṣṇaśuklau ubhau pakṣau gayāyām yaḥ vaset naraḥ
punāti āsaptamam rājan kulam na asti atra saṃśayaḥ

84. O King, any person who resides in Gayā for both the dark and bright lunar fortnights purifies their family up to the seventh generation. There is no doubt about this.

Words meanings summery:

• कृष्णशुक्लौ (kṛṣṇaśuklau) - dark and white (fortnights)

• उभौ (ubhau) - both

• पक्षौ (pakṣau) - fortnights

• गयायाम् (gayāyām) - in Gayā

• यः (yaḥ) - who, whoever

• वसेत् (vaset) - should reside, lives

• नरः (naraḥ) - a man, a human being

• पुनाति (punāti) - purifies

• आसप्तमम् (āsaptamam) - up to the seventh (generation)

• राजन् (rājan) - O King

• कुलम् (kulam) - family, lineage, race

• न (na) - not

• अस्ति (asti) - is, exists

• अत्र (atra) - here, in this (matter)

• संशयः (saṁśayaḥ) - doubt, uncertainty

Words meanings and morphology

कृष्णशुक्लौ (kṛṣṇaśuklau) - dark and white (fortnights)

(adjective)

Nominative, masculine, dual of kṛṣṇaśukla

kṛṣṇaśukla - dark and white

Compound type : dvandva (kṛṣṇa+śukla)

• kṛṣṇa – dark, black, dark fortnight
  adjective (masculine)
• śukla – white, bright, bright fortnight
  adjective (masculine)

उभौ (ubhau) - both

(pronoun)

Nominative, masculine, dual of ubha

ubha - both

पक्षौ (pakṣau) - fortnights

(noun)

Nominative, masculine, dual of pakṣa

pakṣa - wing, side, party, lunar fortnight

गयायाम् (gayāyām) - in Gayā

(proper noun)

Locative, feminine, singular of gayā

gayā - Gaya (name of a holy city in India, particularly for ancestor rites)

यः (yaḥ) - who, whoever

(pronoun)

Nominative, masculine, singular of yad

yad - which, who, what

वसेत् (vaset) - should reside, lives

(verb)

3rd person , singular, active, optative (vidhi liṅ) of vas

Root: vas (class 1)

नरः (naraḥ) - a man, a human being

(noun)

Nominative, masculine, singular of nara

nara - man, human being, person

पुनाति (punāti) - purifies

(verb)

3rd person , singular, active, present (laṭ) of pū

Root: pū (class 9)

आसप्तमम् (āsaptamam) - up to the seventh (generation)

(adjective)

Accusative, neuter, singular of āsaptama

āsaptama - up to the seventh, including the seventh

indeclinable formed from 'ā' (up to) and 'saptama' (seventh)

Compound type : avyayībhāva (ā+saptama)

• ā – up to, until, including
  indeclinable
• saptama – seventh
  numeral (neuter)

राजन् (rājan) - O King

(noun)

Vocative, masculine, singular of rājan

rājan - king, ruler

कुलम् (kulam) - family, lineage, race

(noun)

Accusative, neuter, singular of kula

kula - family, race, lineage, community

न (na) - not

(indeclinable)

अस्ति (asti) - is, exists

(verb)

3rd person , singular, active, present (laṭ) of as

Root: as (class 2)

अत्र (atra) - here, in this (matter)

(indeclinable)

Locative case of 'idam' in form of an adverb

संशयः (saṁśayaḥ) - doubt, uncertainty

(noun)

Nominative, masculine, singular of saṃśaya

saṁśaya - doubt, uncertainty, hesitation

Prefix: sam

Root: śī (class 2)