For the purification of the unclean person, take some of the ashes of the burnt sin offering, put them in a jar, and pour fresh water over them.
Directions are here given concerning the use and application of the ashes which were prepared for purification. they were laid up to be laid out; and therefore, though now one place would serve to keep them in, while all Israel lay so closely encamped, yet it is probable that afterwards, when they came to Canaan, some of these ashes were kept in every town, for...
Commenting on Numbers 19:11-22
And for an unclean person,.... Defiled by any of the above means: they shall take of the ashes of the burnt heifer of purification for sin; from the place where they were laid up for this use; See Gill on Num 19:9 and some have thought that they were laid up in various cities and places in the country, as well as at Jerusalem, that...
And for an unclean [person] they shall take of the ashes of the burnt heifer of purification for sin, and running water shall be put thereto in a vessel: (h) Of the red cow burnt for sin. (i) Water of the fountain or river.