Related על פסחים 96:17

And the Sages say, three women are involved in the dough (i.e., the process of making matzah): One kneads it, one spreads it out, [and] one bakes it. When one [completes her] kneading, she spreads it out, and another kneads in her place. When one [completes] spreading out [the dough], she bakes it, and another one spreads out in her place. Since the three of them are involved in it and each one continues in turn (=חוזרין חלילה, see Pes. 48b:10, Steinsaltz tr.), the dough will not become leavened. *What is the measure of the dough? Rabbi Yishmael bar Rabbi Yochanan ben Berokah says, with respect to wheat, up to three kavs, and with respect to barley, up to four kavs. And as long as a woman is [actively] involved in the dough, it will not be susceptible to becoming chametz. Rabbi Natan says in the name of Rabbi Eliezer, the matters are reversed (i.e., it is actually three kavs for barley and four kavs for wheat). (*Note: Per Minchat Bikkurim, "the measure of the dough" refers to the maximum amount of dough that three women can work with at once without potentially rendering it chametz.)