R. Simlai came before R. Johanan [and] requested him, Let the Master teach me the Book of Genealogies. Said he to him, Whence are you? — He replied, From Lod. And where is your dwelling? In Nehardea. Said he to him, We do not discuss it either with the Lodians or with the Nehardeans, and how much more so with you, who are from Lod and live in Nehardea! But he urged him, and he consented, Let us learn it in three months, he proposed. [Thereupon] he took a clod and threw it at him, saying, If Beruriah, wife of R. Meir [and] daughter of R. Hanina b. Teradion, who studied three hundred laws from three hundred teachers in [one] day, could nevertheless not do her duty in three years, yet you propose [to do it] in three months!