Midrash for Pesachim 189:15
בכלליה דעצם לא ישברו בו
May I [not] reverse it? - [The inclusion of] a precept pertaining to itself is preferable. What is included in the general proposition as bearing on 'they shall leave none of it unto the morning'? - thou shall not carry forth aught [of the flesh abroad out of the house],<span class="x" onmousemove="('comment',' Ex. XII, 46');"><sup>20</sup></span> <sup>21</sup> while the other is disqualified through going out [of its permitted boundary]">.<span class="x" onmousemove="('comment',' Var. lec. omits the bracketed passage.');"><sup>22</sup></span> What does it exclude by its particularization? -[Leaven] 'shall not be seen and 'shall not be found,' (which is similar thereto, for the one does not involve flagellation, since it is a negative precept modified to a positive precept, while the other does not involve flagellation, since It is a negative precept modified to a positive precept).<span class="x" onmousemove="('comment',' If flesh of the Passover sacrifice is left over, it must be burnt, while if leaven is not completely removed before Passover, so that it is 'seen' or 'found', it must be destroyed whenever discovered. Hence both of these negative precepts are modified to positive precepts, and he who violates them is not flagellated.-Var. lec. omits the bracketed passage.');"><sup>23</sup></span> May I [not] reverse it? - [The inclusion of] a precept pertaining to itself is preferable. What is included in the general proposition as bearing on 'they shall not break a bone thereof?