Matthew 5:23

5:23 So then, if you bring your gift to the altar and there remember that your brother has something against you,

Matthew 23:18

23:18 And, ‘Whoever swears by the altar is bound by nothing. ¹  But if anyone swears by the gift on it he is bound by the oath.’

[23:18]  ¹ tn Grk “Whoever swears by the altar, it is nothing.”