Rab Acha Sela, the son of Rab Acha Sela the Great, said: Abaye at the end of Ketubot. [Another version was presented to him, as it is stated there (Kiddushin 81a): "The righteous in the Diaspora live through the reincarnation of pits." Rabbi Abaye challenged this, saying: "The reincarnation of pits is a source of suffering." Abaye replied that pits were made for them, and it is possible that Abaye did not see him, but rather he resolved his question (as mentioned above regarding Abba).]
Seder_HaDorot,_Tanaim_and_Amoraim.330:1