Vaisesika Sūtra 3.2.04

प्राणापाननिमेषोन्मेषजीवनमनोगतीन्द्रियान्तरविकाराः सुखदुः खेच्छाद्वेषप्रयत्नाश्चात्मनो लिङ्गानि ॥४॥

prāṇa-apāna-nimeṣa-unmeṣa-jīvana-manaḥ-gati-indriya-antara-vikārāḥ sukha-duḥkha-icchā-dveṣa-prayatnāḥ-ca ātmanaḥ liṅgāni ॥4॥

[प्राण (prāṇa) - inhalation; अपान (apāna) - exhalation; निमेष (nimeṣa) - closing of eyes; उन्मेष (unmeṣa) - opening of eyes; जीवन (jīvana) - life; मनःगति (manaḥ-gati) - movement of mind; इन्द्रियान्तरविकाराः (indriya-antara-vikārāḥ) - changes in internal senses; सुख (sukha) - pleasure; दुःख (duḥkha) - pain; इच्छा (icchā) - desire; द्वेष (dveṣa) - aversion; प्रयत्नाः (prayatnāḥ) - efforts; च (ca) - and; आत्मनः (ātmanaḥ) - of the self; लिङ्गानि (liṅgāni) - indicators;]

Inhalation, exhalation, eye movements, life, mind movement, changes in internal senses, pleasure, pain, desire, aversion, and efforts are indicators of the self.