Babylonian amora of the second generation (3d cent.); known both as halakist and as haggadist. He was a pupil of Rab (ABBA ARIKA); and his halakot are frequently mentioned in the Babylonian Talmud, as transmitted either by himself (Ta'an. 7b; Yoma 54a; et al.) or in his name by Ḥisda (Bek. 35a; 'Ar. 32a) and Rabbah b. Huna (Bek. 44b). It was Ḳaṭṭina who inferred from Isaiah 12:11 that the existence of the world is divided into periods of 6,000 years each, with intervals of 1,000 years of chaos (R. H. 31a; Sanh. 97a).