Reference for Pesachim 67:6
הניחא למ"ד היסח הדעת פסול הגוף הוי שפיר אלא למ"ד היסח הדעת פסול טומאה הוי מאי איכא למימר
And should you answer: It refers to the second growth,<span class="x" onmousemove="('comment',' Lit., 'what is growth of what is grown'.');"><sup>9</sup></span> and what does he inform us? [That this law holds good] in respect of that whose seed<span class="x" onmousemove="('comment',' I.e., the original stock.');"><sup>10</sup></span> is not destroyed?<span class="x" onmousemove="('comment',' E.g., an onion, the original stock of which remains when it is planted. Now its original leaves grow larger, and this is referred to as the growth. But in addition it sends out fresh shoots altogether, which never were terumah: these are referred to as the second growth, and we are informed that even these are terumah.');"><sup>11</sup></span>