R. Anan subsequently came and threw it down when he exclaimed: I have been living undisturbed in this alley on the authority of Samuel, why should R. Anan b. Rab now come and throw its side-post down!’ May it not then be deduced from this that he did not accept it from him? — As a matter of fact it may still be maintained that he did accept it from him, but in this case a Synagogue superintendent who was having his meals in his own home came to spend his nights at the Synagogue. Eibuth b. Ihi [however] thought that one's dining place is the cause [of shittuf], while Samuel [in reality] was merely acting on his own principle he having laid down that one's night's lodging — place is the cause. Rab Judah citing Rab ruled: For an alley whose one side occupied by all idolater and its other side by an Israelite no ‘erub may be prepared through windows render the movement of objects permissible by way of the door into the alley. Said Abaye to R. Joseph: Did Rab give the same ruling even in respect of a courtyard? — Yes, the other replied, for if he had not given it I might have presumed that Rab's reason for his ruling was his opinion that the use of an alley cannot be rendered permissible by means of a side-post or cross-beam unless houses and courtyards opened into it; and [as to the objection:] What need was there for two [rulings it could be replied that both were] necessary: For if all our information had to be derived from the former ruling34ᵃᵇᶜᵈᵉᶠᵍʰⁱʲᵏˡᵐⁿᵒᵖᵠʳˢᵗᵘᵛʷˣʸᶻᵃᵃᵃᵇᵃᶜᵃᵈᵃᵉᵃᶠᵃᵍᵃʰ