Reference for Makkot 41:13

רב פפא אמר מתניתין ומתניתא רב מלכיא שמעתתא רב מלכיו וסימניך מתניתא מלכתא מאי בינייהו איכא בינייהו שפחות

Rav Pappa said, The [rulings that concern] mishnas and baraisas [are attributed to] Rav Malkio. The [rulings that concern] amorahic teachings [are attributed to] Rav Malkio. And your menominc would be, A mishna is a queen. What is the difference between [Rav Nachman's opinion and Rav Pappa's opinion]? The difference between them is [the ruling concerning] maidservants.

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