 Only a few of Ben Zoma's exegetic teachings have been preserved.The most widely known of these is his interpretation of the phrase, "that you may remember the day when you came forth out of Egypt" to prove that the recitation of the biblical passage referring to the Exodus is obligatory for the evening prayer as well as for the morning prayer.This interpretation, quoted with praise by Eleazar ben Azariah, has found a place in the Haggadah for the Passover night.