Reference for Berakhot 37:16

ותניא אותו היום הביאו כל טהרות שטיהר ר"א ושרפום לפניו ולבסוף ברכוהו

And there is a teaching : That day they brought everything that R. Eliezer had proclaimed clean and burnt it in his presence, and finally they excommunicated him.

Jastrow