CHĀNDOGYA UPANISHAD · 3.17.5

तस्माद् आहुः सोष्यत्य् असोष्टेति ।
पुनर् उत्पादनम् एवास्य तत् ।
मरणम् एवावभृथः ॥

tasmād āhuḥ soṣyaty asoṣṭeti ।
punar utpādanam evāsya tat ।
maraṇam evāvabhṛthaḥ ॥

Therefore when they say, 'There will be a birth,' and 'there has been a birth' (words used at the Soma-sacrifice, and really meaning, 'He will pour out the Soma-juice,' and 'he has poured out the Soma-juice'), that is his new birth. His death is the Avabhritha ceremony (when the sacrificial Vessels are carried away to be cleansed).

F. Max Müller · The Upanishads, Sacred Books of the East 1 (1879)