Reference for Avodah Zarah 55:11

והא רבי אבהו דאדם חשוב הוה ורמא ליה יעקב מינאה סמא אשקיה ואי לא רבי אמי ורבי אסי דלחכוהו לשקיה פסקיה לשקיה

What about R. Abahu, who too was a distinguished man, yet Jacob the heretic prepared for him a medicine for his leg, and were it not for R. Ammi and R. Asi who licked his leg, he would have cut his leg off?

Jastrow

Jastrow