ŚVETĀŚVATARA UPANISHAD · 6.3

तत् कर्म कृत्वा विनिवर्त्य भूयस् तत्त्वस्य तत्त्वेन समेत्य योगम् ।
एकेन द्वाभ्यां त्रिभिर् अष्टभिर् वा कालेन चैवात्मगुणैश् च सूक्ष्मैः ॥

tat karma kṛtvā vinivartya bhūyas tattvasya tattvena sametya yogam ।
ekena dvābhyāṃ tribhir aṣṭabhir vā kālena caivātmaguṇaiś ca sūkṣmaiḥ ॥

He who, after he has done that work and rested again, and after he has brought together one essence (the self) with the other (matter), with one, two, three, or eight, with time also and with the subtile qualities of the mind,

F. Max Müller · The Upanishads, Sacred Books of the East 15 (1884)