But who is the ignorant one from whom this mercy is to be withheld? Here the doctors disagree. He, says Rabbi Eliezer, who does not read the Shema, " Hear, O Israel, M etc., both morning and evening. According to Rabbi Yehudah, he that does not put on phylacteries is an ignorant one. Rabbi Azai affirms that he who wears no fringes to his garment is an ignorant one, etc. Others again say he who even reads the Bible and the Mishna but does not serve the disciples of the wise, is an ignorant one. Rabbi Huna winds up with the words "the law is as the others have said," and so leaves the difficulty where he finds it. (Berachoth, fol. 47, col. 2.)
Who Counts as an Ignorant One in the Talmud
Berachot 47b