And when Israel unite the blessed Holy One, through the phylacteries of the hand, and through the phylacteries of the head, in fear and love, it is stated of them: (Deut. 22:6)... do not take the mother upon the children, and if not, then (Deut. 22:7) You shall surely send away...
And when they fulfil the precept of the covenant of circumcision, and remove the foreskin from themselves, and perform the act of pri’ah, in fear and love, it is stated of them: Do not take the mother upon the children, (Deut. 22:6) and if not, then You shall surely send away the mother... (Deut. 22:7)