Kāśikāvṛttī1: 
ktānte ca uttarapade caturthyantaṃ prakṛtisvaraṃ bhavati. gohitam. aśvahitam.
ma 
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ktānte ca uttarapade caturthyantaṃ prakṛtisvaraṃ bhavati. gohitam. aśvahitam.
manuṣyahitam. gorakṣitam. aśvarakṣitam. vanaṃ tāpasarakṣitam. aśvaśabda ādyudāttaḥ.
manuṣyaśabdo 'ntasvaritaḥ. pariśiṣṭa pūrvapadamantodāttam. gobhyo rakṣitam iti
sampradāne caturthī.
Kāśikāvṛttī2: kte ca 6.2.45 ktānte ca uttarapade caturthyantaṃ prakṛtisvaraṃ bhavati. gohitam See More
kte ca 6.2.45 ktānte ca uttarapade caturthyantaṃ prakṛtisvaraṃ bhavati. gohitam. aśvahitam. manuṣyahitam. gorakṣitam. aśvarakṣitam. vanaṃ tāpasarakṣitam. aśvaśabda ādyudāttaḥ. manuṣyaśabdo 'ntasvaritaḥ. pariśiṣṭa pūrvapadamantodāttam. gobhyo rakṣitam iti sampradāne caturthī.
Nyāsa2: kte ca. , 6.2.45 "a()āśabda ādyudāttaḥ" iti. kvanparatyayāntatvat(). & See More
kte ca. , 6.2.45 "a()āśabda ādyudāttaḥ" iti. kvanparatyayāntatvat(). "manuṣyaśabdo'ntasvaritaḥ" iti. "manordhātāvañyatau ṣukca" 4.1.161 iti yatpratyayāntatvāt(). "pariśiṣṭamantodāttam()" iti. tat? punargośabdaḥ, tāpasaśabdaśca. tatra "gamerḍos()" (da.u.2.11) [gomarḍoḥ--da.u; paṃ.u.] iti ḍospratyayāntatvādgośabdaḥ pratyayasvareṇāntodāttaḥ. tāpasaśabdo'payaṇpratyayāntatvāt(). sa hi "tapaḥsaharuāābhyāṃ vinīnī" (5.2.102) "aṇ? ca" 5.2.102 ityaṇpratyayānto vyutpādyate. atha "gorakṣitam()" iti kathamidamasyodāharaṇam(), yāvatā gobhyo rakṣimiti tādarthye caturthī, tatra hi yogata uttarapadena bhavitavayam()? ityata āha--"gobhyo rakṣitam()" ityādi. na hratra gavārthaṃ rakṣita ityeṣo'rtho vivakṣitaḥ, kiṃ tarhi? gobhyo rakṣitaṃ dīyate ityetadadhyāhāryam(). tasmāt? sampradāna eṣā caturthī, tat? kutastādathryam()!॥
1.Source: Arsha Vidya Gurukulam
2.Source: Sanskrit Documents
