The outlines are mostly meant for Shakla v'Tarya and quick review, so I did not see such a need to give all the details of the case, but some might find it hard to follow, and the full story reveals how Abaye holds, so we will fix the outlines to give all the details.

(f) Rav Safra (to Abaye): Did you see this Chacham from the west (Eretz Yisrael)? He said that his name is Rav Avira, and he said that a case came in front of Rebbi of a needle found with one end in the wall of the Beis ha'Kosos, and he declared it Tereifah!

1. Abaye called for Rav Avira to come; he did not come. Abaye went to him; he was on the roof. Abaye told him to descend; he did not descend. Abaye ascended to him, and asked him to hear the exact story.

2. Rav Avira: I used to get the Talmidim to enter and leave the Beis Midrash in front of Rebbi. Rav Huna of Tzipora'ah and R. Yosi of Madau were in front of him, and a case came in front of Rebbi of a needle found with one end in the wall of the Beis ha'Kosos.

i. He turned the Beis ha'Kosos inside out and found a drop of blood on the needle and declared it Tereifah.

ii. Rebbi: If there was no wound, from where would there be blood? (Surely, the needle had gone all the way through, and later, it moved back.)

3. Abaye: He exerted me [to come to him] for nothing! Our Mishnah teaches this - ... if the Masas (a middle stomach) or the Beis ha'Kosos (the connection between the Keres and Masas) was punctured externally (it is Tereifah).

Pesach Feldman