ŚVETĀŚVATARA UPANISHAD · 1.10

क्षरं प्रधानम् अमृताक्षरं हरः क्षरात्मानाव् ईशते देव एकः ।
तस्याभिध्यानाद् योजनात् तत्त्वभावाद् भूयश् चान्ते विश्वमायानिवृत्तिः ॥

kṣaraṃ pradhānam amṛtākṣaraṃ haraḥ kṣarātmānāv īśate deva ekaḥ ।
tasyābhidhyānād yojanāt tattvabhāvād bhūyaś cānte viśvamāyānivṛttiḥ ॥

That which is perishable is the Pradhâna (the first), the immortal and imperishable is Hara. The one god rules the perishable (the pradhâna) and the (living) self. From meditating on him, from joining him, from becoming one with him there is further cessation of all illusion in the end.

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