Special 7 Blessings he made when he traveled to Bavel: Ketuvot 8a
Rabbi Avahu answering him with hand gestures: Bava Metzia 7a
Labelled "One of the Rabbis": Moed Katan 27a
Rav Chisda taught a lesson from a verse, which Rav Tachlifa, from Israel, heard and re-told to Rabbi Avahu. Rabbi Avahu provided a different verse for the lesson: Eruvin 54b