Chullin 220:1
כל מצות עשה שמתן שכרה בצדה אין בית דין שלמטה מוזהרין עליה
Every commandment which carries its reward by its side does not fall within the jurisdiction of the Court below.'<span class="x" onmousemove="('comment',' And the reward for honouring parents is stated side by side with the precept; v. Ex. XX, 12. heka');"><sup>1</sup></span>
מ"ש למיסר נפשה דלא מיבעיא לך דתנן
When he [R'Safra] returned, Abaye said to him: 'I had no doubt at all that it, itself, was forbidden;<span class="x" onmousemove="('comment',' It is certainly permitted because it is discharging blood all the time during the cooking and will not absorb at all.');"><sup>3</sup></span>
דילמא התם בכבדא דאיסורא
Then you should have no more doubts as to whether it renders others forbidden, for we have learnt: The liver renders [other pieces in the pot] forbidden but is not itself rendered forbidden, for it exude and does not absorb'!<span class="x" onmousemove="('comment',' Ter. X, 11.');"><sup>4</sup></span> - He replied.' Perhaps there it refers to the liver of a forbidden [animal]