Reference for Chullin 220:5

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');">¹</span>

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