योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-39, verse-39

सतां हृदयगामिन्या रूढया शशिशीतया ।
मैत्र्या माधुर्यधर्मिण्या हृत्स्थमात्मानमर्चयेत् ॥ ३९ ॥

satāṃ hṛdayagāminyā rūḍhayā śaśiśītayā ,
maitryā mādhuryadharmiṇyā hṛtsthamātmānamarcayet 39

39. satām hṛdayagāminyā rūḍhayā śaśiśītayā maitryā
mādhurya_dharmiṇyā hṛtstham ātmānam arcayet

39. ekaḥ hṛtstham ātmānam satām hṛdayagāminyā rūḍhayā
śaśiśītayā mādhurya_dharmiṇyā maitryā arcayet

39. One should worship the self (ātman) dwelling in the heart with friendship (maitrī) that is deeply established, tranquil as the moon, intrinsically sweet by nature (dharma), and reaches the hearts of virtuous beings.

Words meanings summery:

• सताम् (satām) - of virtuous beings (of the good, of the virtuous, of the noble)

• हृदयगामिन्या (hṛdayagāminyā) - by that which goes to the heart, by that which reaches the heart, by that which dwells in the heart

• रूढया (rūḍhayā) - by that which is deeply rooted, by that which is established, by that which is firm

• शशिशीतया (śaśiśītayā) - by that which is cool as the moon, by that which is tranquil as the moon

• मैत्र्या (maitryā) - by friendship, by friendliness, by benevolence

• माधुर्य_धर्मिण्या (mādhurya_dharmiṇyā) - by that which possesses the nature of sweetness, by that which is characterized by sweetness

• हृत्स्थम् (hṛtstham) - residing in the heart, located in the heart

• आत्मानम् (ātmānam) - the self, the soul, the essence

• अर्चयेत् (arcayet) - one should worship, one should honor, one should revere

Words meanings and morphology

सताम् (satām) - of virtuous beings (of the good, of the virtuous, of the noble)

(adjective)

Genitive, masculine, plural of sat

sat - being, existing, good, virtuous, noble, real, true

Present Active Participle

Derived from root 'as' (to be)

Root: as (class 2)

हृदयगामिन्या (hṛdayagāminyā) - by that which goes to the heart, by that which reaches the heart, by that which dwells in the heart

(adjective)

Instrumental, feminine, singular of hṛdayagāmin

hṛdayagāmin - going to the heart, reaching the heart, dwelling in the heart

Compound type : tatpuruṣa (hṛdaya+gāmin)

• hṛdaya – heart, mind, core
  noun (neuter)
• gāmin – going, moving, reaching
  adjective (masculine)
  Derived from root 'gam' (to go) with suffix '-in'
  Root: gam (class 1)

रूढया (rūḍhayā) - by that which is deeply rooted, by that which is established, by that which is firm

(adjective)

Instrumental, feminine, singular of rūḍha

rūḍha - grown, risen, mounted, established, firmly rooted, conventional

Past Passive Participle

Derived from root 'ruh' (to grow, ascend)

Root: ruh (class 1)

शशिशीतया (śaśiśītayā) - by that which is cool as the moon, by that which is tranquil as the moon

(adjective)

Instrumental, feminine, singular of śaśiśīta

śaśiśīta - cool as the moon

Compound type : tatpuruṣa (śaśin+śīta)

• śaśin – moon, rabbit-marked (referring to the moon)
  noun (masculine)
• śīta – cool, cold, tranquil, calm
  adjective (masculine)
  Past Passive Participle
  Derived from root 'śyai' (to be cold)
  Root: śyai (class 1)

मैत्र्या (maitryā) - by friendship, by friendliness, by benevolence

(noun)

Instrumental, feminine, singular of maitrī

maitrī - friendship, friendliness, benevolence, goodwill (maitrī)

माधुर्य_धर्मिण्या (mādhurya_dharmiṇyā) - by that which possesses the nature of sweetness, by that which is characterized by sweetness

(adjective)

Instrumental, feminine, singular of mādhurya_dharmin

mādhurya_dharmin - possessing the nature of sweetness, characterized by sweetness

Compound type : tatpuruṣa (mādhurya+dharmin)

• mādhurya – sweetness, charm, pleasantness
  noun (neuter)
• dharmin – possessing qualities, having a certain nature (dharma), characterized by
  adjective (masculine)
  Derived from 'dharma' with suffix '-in'

हृत्स्थम् (hṛtstham) - residing in the heart, located in the heart

(adjective)

Accusative, masculine, singular of hṛtstha

hṛtstha - situated in the heart, residing in the heart

Compound type : tatpuruṣa (hṛd+stha)

• hṛd – heart, mind
  noun (neuter)
• stha – standing, situated, residing
  adjective (masculine)
  Derived from root 'sthā' (to stand)
  Root: sthā (class 1)

आत्मानम् (ātmānam) - the self, the soul, the essence

(noun)

Accusative, masculine, singular of ātman

ātman - self, soul, essence, breath (ātman)

अर्चयेत् (arcayet) - one should worship, one should honor, one should revere

(verb)

3rd person , singular, active, optative (vidhiliṅ) of arc

Root: arc (class 1)