Num Numbers, chapter Book of Numbers, chapter 5
And the kohen shall set the isha before Hashem, and unbind the hair of the isha, and put the minchat hazikaron in her hands, which is the minchat kena'ot; and the kohen shall have in his hand the mei hamarim hame'ararim (waters of bitterness that causeth the curse); 1Co 11:5