Chandogya Upanishad 3.80

तस्मादाहुः सोष्यत्यसोष्टेति पुनरुत्पादनमेवास्य तन्मरणमेवास्यावभृथः ॥ ५ ॥

3.17.5 — tasmadahuh soshyatyasoshteti punarutpadanamevasya tanmaranamevasyavabhrithah || 5 ||

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).

इसीलिए लोग कहते हैं 'सोम-यज्ञ करेगा', 'सोम-यज्ञ किया' — यह उसका पुनर्जन्म ही है; और उसकी मृत्यु ही उसका अवभृथ (यज्ञान्त स्नान) है।