רב יחיאל

Rav Yechiel was an amora whose teachings appear across several tractates of the Talmud, chiefly on practical points of halachah. He is brought repeatedly in Eruvin, where his rulings clarify the measures and methods of forming an eiruv — for example, the quantity needed when using hops, plant ash, or fresh beans is set by him at a handful (“k’malo hayad”), and his principle that “there is a presumption that an agent fulfills his mission” (chazakah shaliach oseh shelichuto) is applied to questions of whether an eiruv was properly delivered. In Eruvin he also defines a measure “up to four” in a dispute over the wall of a partition.

His teachings extend to festival law and to everyday practical matters. In Beitzah he teaches a limitation regarding doing something in a row, with the Gemara adding that a row is no fewer than three people. In Moed Katan he explains a term, identifying “bat eina” as part of a discussion of millstone work. In Nedarim a remedy for the sick is brought in his name through Rabbah bar Yonatan, describing a preparation of barley.