This statement is recorded in Matthew 8:22 and Luke 9:60
LET THE DEAD BURY THEIR OWN DEAD: Or, "Leave dead to the burier of the dead." Lamsa writes: "The Aramaic word for 'dead' is 'metta', and the word for 'town' is 'matta'... It seems more likely that the early copyists and translators confused the [two words] and what Jesus meant was, 'let the town bury the dead.' This seems more reasonable because each town buries their own dead."
This comment is taken from an online Bible commentary on Matthew 8 (please click on the highlighted text):
I hope you have found this helpful.