I just looked for the "shake the dust from your feet" passage. Couldn't find the location of that one either. Time for a copy of Strong's edition.
but their plot became known to Saul. And they were also watching the gates day and night so that they might put him to death;
but his disciples took him by night, and let him down through an opening in the wall, lowering him in a large basket.
Acts 9:23-25
MAR 6:11 "And any place that does not receive you or listen to you, as you go out from there, shake off the dust from the soles of your feet for a testimony against them."
LUK 9:5 "And as for those who do not receive you, as you go out from that city, shake off the dust from your feet as a testimony against them."
LUK 10:11 'Even the dust of your city which clings to our feet, we wipe off in protest against you; yet be sure of this, that the kingdom of God has come near.'
ACT 13:51 But they shook off the dust of their feet in protest against them and went to Iconium.