The seventh part of the qedushta for the ancient triennial Torah reading וַיְהִי בַּחֲצִי הַלַּיְלָה, “It Came to Pass at Midnight,” was preserved in the Haggadah. This is the only poem of Yannai’s (ca. 5th/6th cent. C.E.) to be retained in the liturgy.
A Post-Destruction model of Jewish Identity: Reading and studying Torah as if our life depended on it.
Jacob L. Wright