ר' אלעזר בן פנחס

Rabbi Elazar ben Pinchas [in the Jerusalem Talmud, Sotah 1:2, as to what the measure of cohabitation is, Rabbi Eliezer said... Rabbi Yehoshua said... Ben Azzai said... Rabbi Akiva said...

Rabbi Yishmael said... Rabbi Elazar ben Pinchas says. Minyamin said. Rabbi Yosi said, all these measures...

Rabbi Yochanan said, each one estimated for himself. And in Yoma 1 (18a), Rabbi Elazar bar Rabbi Pinchas in the name of Rabbi Yishmael, it appears that it was during the time of Rabbi Yishmael].