Reference for Avodah Zarah 64:3

א"ל אביי הלכה מכלל דפליגי א"ל מאי נפקא לך מינה א"ל גמרא גמור זמורתא תהא:

Abaye said: “The halakhah follows” implies that they argue about this? He said to him: What difference does it make to you? He said back to him: Is the learning of the tradition, to be like the singing of a song?

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