Reference for Menachot 176:10

אמר רב הונא בריה דרב יהודה אמר רב ששת נר שבמקדש של פרקים הוה

- It is obvious, said R'Jeremiah. that he puts in as much oil as at first, for should you say only the quantity needed [for the remainder of the night, the question will be asked].

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