Liturgy for Pesachim 232:13
לפיכך אנחנו חייבין:
But that is not so, for Meremar said: I asked the scholars of the School of R'Joseph, who recites the Aggadah<span class="x" onmousemove="('comment',' Haggadah.');"><sup>16</sup></span> at R'Joseph's? And they told me, R'Joseph; Who recites the Aggadah at R'Shesheth's? And they told me, R'Shesheth.<span class="x" onmousemove="('comment',' R. Joseph and R. Shesheth were both blind.');"><sup>17</sup></span> - These Rabbis held that un-leavened bread nowadays is a Rabbinical obligation.<span class="x" onmousemove="('comment',' Sc. that unleavened bread must he eaten on the first night of Passover (the interdict of leavened bread of course is Biblical) . Hence the reciting of the Haggadah is likewise Rabbinical, and therefore 'unaffected by R. Aha b. Jacob's deduction.');"><sup>18</sup></span> Hence it follows that R'Aha B'Jacob holds that unleavened bread nowadays is a Scriptural obligation?<span class="x" onmousemove="('comment',' For he states his law generally, and therefore meant it for post-Temple times too.');"><sup>19</sup></span> But Surely it was R'Aha B'Jacob himself who said: [The obligation of eating] unleavened bread nowadays is Rabbinical! - He holds, Whatever our Rabbis enacted, they enacted it similar to the Scriptural Jaw.<span class="x" onmousemove="('comment',' On which it is based. Hence since the blind were exempt from reciting the Haggadah when it was a Scriptural obligation, they are still exempt now that it is only Rabbinical.');"><sup>20</sup></span> But according to R'Shesheth and R'Joseph too, surely it is certain that whatever our Rabbis enacted, they enacted similar to a Scriptural law? - How compare!<span class="x" onmousemove="('comment',' They reject the law entirely, together with the analogy on which it is based.');"><sup>21</sup></span> As for there, it i we: since it should have been written, 'He is our son,' whereas it is written, 'This our son,'<span class="x" onmousemove="('comment',' v. Sanh., Sonc. ed. p. 486, n. 2 and 3.');"><sup>22</sup></span> you may infer that it comes to exclude blind persons. But here, if not 'for the sake of this' what should be written? Hence it comes [to intimate], 'for the sake of the unleavened bread and bitter herbs.'<span class="x" onmousemove="('comment',' I.e., it does not intimate that he who recites must see it, but simply means: it is for this reason that I eat unleavened bread and bitter herbs viz., because of what the Lord did for me etc.');"><sup>23</sup></span> THEREFORE IT IS OUR DUTY.