Vaisesika Sūtra 6.2.02

अभिषेचनोपवासब्रह्मचर्यगुरुकुलवासवानप्रस्थयज्ञ दानप्रोक्षणदिङ्नक्षत्र मन्त्रकालनियमाश्चादृष्टाय ॥२॥

abhiṣecanopavāsa-brahmacarya-gurukulavāsa-vānaprastha-yajña-dāna-prokṣaṇa-diṅ-nakṣatra-mantra-kāla-niyamāś-ca-adṛṣṭāya ॥2॥

[अभिषेक (abhiṣecana) - consecration; उपवास (upavāsa) - fasting; ब्रह्मचर्य (brahmacarya) - celibacy; गुरुकुलवास (gurukulavāsa) - dwelling in a preceptor’s home; वानप्रस्थ (vānaprastha) - forest-dwelling stage; यज्ञ (yajña) - sacrifice; दान (dāna) - charity; प्रोक्षण (prokṣaṇa) - sprinkling; दिक् (diṅ) - direction; नक्षत्र (nakṣatra) - star; मन्त्र (mantra) - mantra; काल (kāla) - time; नियमाः (niyamāḥ) - regulations; च (ca) - and; अदृष्टाय (adṛṣṭāya) - for the unseen;]

Consecration, fasting, celibacy, residence in the preceptor's home, forest life, sacrifice, charity, sprinkling, direction, star, mantra, time, and regulations — all are for the unseen.