A Babylonian amora of the fourth century, disciple of Abaye and of Raba. He appears to have obtained some halakic information from Rabina I., and in his later years to have associated with Rabina II. To satisfy his thirst for knowledge, he felt obliged to leave his home, and when his wife asked, "What will thy little ones do?" he laconically replied, "Are the water-plants in the marshes all gone?" (Shab. 48a; Ket. 28a, 77b, 85a; Shebu. 18a; Meg. 28b; 'Er. 22a).