Reference for Menachot 60:9

אלא אהא ר"ש שזורי אומר אפי' בן חמש שנים וחורש בשדה שחיטת אמו מטהרתו

Rabin B'Hinena said in the name of 'Ulla who had it from R'Hanina, The halachah is in accordance with R'Simeon of Shezur.<span class="x" onmousemove="('comment',' In Upper Galilee.');">⁶</span> Moreover, wherever R'Simeon of Shezur stated his view the halachah is in accordance with it.

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