Karika 37

सर्वं प्रत्युपभोगं यस्मात्पुरुषस्य साधयति बुद्धिः। सैव च विशिनष्टि पुनः प्रधानपुरुषान्तरं सूक्ष्मम् ॥३७॥

sarvaṁ pratyupabhōgaṁ yasmātpuruṣasya sādhayati buddhiḥ। saiva ca viśinaṣṭi punaḥ pradhānapuruṣāntaraṁ sūkṣmam ॥37॥

[सर्वं प्रति उपभोगं यस्मात् पुरुषस्य साधयति बुद्धिः। सा एव च विशिनष्टि पुनः प्रधान पुरुषान्तरं सूक्ष्मम्॥
sarvaṁ = all; prati = with regard to; upabhōgaṁ = enjoyer / experience; yasmāt = since; puruṣasya = of purusha; sādhayati = accomplishes; buddhiḥ = the intellect; sā = it is; ēva = only; ca = and; viśinaṣṭi = discriminates the topics; punaḥ = again; pradhāna = the material universe; puruṣāntaraṁ = difference between the purusha; sūkṣmam = which is subtle;]

It is the intellect that accomplishes all the experiences for the sake of the purusha. Thus, only it can differentiate the difference between the material universe and the purusha, which is subtle.