Reference for Pesachim 46:13

שאין ת"ל באש תשרף ומה ת"ל באש תשרף אם אינו ענין לגופו דכתיב (ויקרא י, טז) והנה שורף תנהו ענין לכל איסורין שבתורה

Now, 'it shall be burnt with fire' need not be stated;<span class="x" onmousemove="('comment',' As shown below.');">²¹</span> then what is the purpose of 'it shall be burnt with fire'? If it is unnecessary in its own connection, seeing that it is written, and, behold, it was burnt,<span class="x" onmousemove="('comment',' Lev. X, 16, q.v. Moses upbraided the sons of Aaron for burning it, observing, 'Behold, the blood of it was not brought into the sanctuary within' (v. 18) . This proves that when it is brought within, the sacrifice must be burnt; hence the present verse is superfluous.');">²²</span> apply its teaching to all [other] prohibitions of the Torah;<span class="x" onmousemove="('comment',' This is a principle of Talmudic exegesis: when a statement or verse is superfluous in its own connection, it is applied to other laws.');">²³</span>

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