Sūtra 1-45
सूक्ष्मविषयत्वञ्चालिङ्गपर्यवसानम्। (४५)
Sūkṣmaviṣayatvañcāliṅgaparyavasānam.
(Sūkṣma-viṣayatvam ca aliṅga-paryavasānam) (45)
Subtle nature of objects ends in that which is devoid of any pointers to it (Prakṛti). (45)

Sūtra words
Sūkṣma-viṣayatvam, ca and aliṅga-paryavasānam

Word formation
Sūkṣma-viṣayatvam First case singular neuter gender of sūkṣma-viṣayatva. This is formed from the compound sūkṣma-viṣaya with addition of a taddhita suffix tva having the sense ‘the nature of. Sūkṣma-viṣaya is a type of tatpuruṣa compound, called karmadhāraya formed from sūkṣma and viṣaya.
ca Indeclinable
aliṅga-paryavasānam First case singular neuter gender of the bahuvrīhi compound aliṅga-paryavasāna from the words aliṅga and paryavasāna. Aliṅga is formed from the term liṅga with a prefix called negative particle (more like addition of un / in / a to words – imaginable / imitable / typical).  Paryavasāna is formed from the verb so with prefixes pari and ava and suffix ana.

Word meaning
Sūkṣma-viṣayatvam The nature of subtle object. Sūkṣma subtle, viṣaya object, viṣayatva nature of the object
ca and
Aliṅga-paryavasānam is that which ends in the attributeless. Aliṅga etymologically means that which has no liṅga, attribute, pointer. That is, there is no way to express what it is, the cause of everything, prakṛti.

• This aphorism elaborates on nirvicāra-samāpatti practice, that the object of focus is not expressible by any description.