Numbers 19 does not relate to the Wedding. There are no ashes. There is no sacrifice. There is no uncleanness.
Your translation is in error:
shalom b'SHEM Yah'shua HaMashiach NAU John 2:6 Now there were six stone waterpots set there
for the Jewish custom of purification, containing twenty or thirty gallons each. NAU Numbers 19:17 'Then for the unclean person
they shall take some of the ashes of the burnt purification
from sin and flowing water shall be added to them in a vessel.