Rav Ḥisda () was a Jewish Talmudist who lived in Kafri, Asoristan in Lower Mesopotamia near what is now the city of Najaf, Iraq. He was an amora of the third generation (died c. 320 CE at the age of ninety-two), and is mentioned frequently in the Talmud. Biography Rav Ḥisda descended from a priestly family. He studied under Abba Arikha "the Rav", who was his principal teacher and after the latter's death he attended the lectures of Rav Huna, a companion of the same age. The pair were called "the Hasidim of Babylon". Rav Ḥisda was also among those called tzadikim, those who could bring down rain by their prayers. At first, he was so poor that he abstained from vegetables because they increased his appetite, and when he walked in thorny places he raised his garments, saying: "The breaches in my legs will heal of themselves but the breaches in my garments will not". At the age of sixteen he married the daughter of Hanan bar Rava and together they had seven or more sons and two daughters. Later, as a brewer, he became very wealthy. One of his pupils, Rava, became his son-in-law. Rav Ḥisda was a great casuist, his acute mind greatly enhanced the fame of Rav Huna's academy in Sura, but his very acuteness indirectly caused a rupture between himself and Rav Huna. The separation was brought about by a question from Rav Ḥisda as to the obligations of a disciple toward a master to whom he is indispensable. Rav Huna saw the point and said, "Ḥisda, I do not need you; it is you that needs me!". Forty years passed before they became reconciled. Rav Ḥisda nevertheless held Rav Huna in great esteem, and although he had established a school built at his own expense in Mata Mehasya four years before Rav Huna's death, he never published any decision during Rav Huna's lifetime. Rav Huna came to recognize Rav Ḥisda's merit later and recommended his son, Rabbah bar Rav Huna, to attend his lectures. Rav Ḥisda also presided over Sura for ten years following the death of Judah bar Ezekiel, or following the death of Rav Huna, according to Abraham ibn Daud. He always preserved great respect for the memory of Abba Arikha, whom he referred to as "our great teacher, may God aid him". Once, holding up the gifts which are given to