Reference for Pesachim 51:15

הניחא למ"ד אין מלמדין אלא למאן דאמר מלמדין מאי איכא למימר תרי מיעוטי כתיבי כתיב ושמו וכתיב (דברים כא, ו) הערופה

though its religious service has been performed, yet it involves trespass, for it is written; and he shall put them [the ashes] beside the altar,<span class="x" onmousemove="('comment',' Lev. VI, 3.');">¹⁷</span> [which means] that he [the priest] must not scatter nor use [them]?<span class="x" onmousemove="('comment',' Rashal reads: (teaching) that others must not commit trespass therein, but all of it must be beside the altar. - 'All of it' refers to the censerful.');">¹⁸</span>

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