Quotation for Pesachim 215:14
ואמר ר' יהושע בן לוי נשים חייבות בארבעה כוסות הללו
The scholars asked: What about a disciple in his teacher's presence? - Come and hear, for Abaye said: When we were at the Master's [Rabbah B'Nahman's] house, we used to recline on each other's knees. When we came to R'Joseph's house he remarked to us, 'You do not need it: the fear of your teacher is as the fear of Heaven.' An objection is raised: A man must recline with all [people], and even a disciple in his master's presence? - That was taught of a craftsman's apprentice. The scholars asked: What about an attendant? - Come and hear, [or R'Joshua B'Levi said: A attendant, who ate as much as an olive of unleavened bread while reclining has discharged [his duty]. Thus, only while reclining, but not if he was not reclining. This proves that he must recline. This proves it. R'Joshua B'Levi also said: Women are subject to [the law of] these four cups