Liturgy for Chullin 283:28

שלוחי מצוה אינן נזוקים לא בהליכתן ולא בחזרתן

interpreted this verse<span class="x" onmousemove="('comment',' Which promises happiness and length of days to him that performs the commandment; cf. Deut. V, 16, and XXII, 7.');">¹⁹</span>

Hadran