This essay discusses private halal certification agencies, which have come to serve as a source of moral authority. The certificates that these agencies issue serve as “judgment devices” that allow entrepreneurs and consumers to transcend doubt about the quality and value of the products offered in the market. But what explains the authority of these agencies, which were able to turn pious aspirations into professional pursuit of analyzing and attesting to a business’s halal status? The argument here is that the authority of the certifiers is partly derived from transnational valuation circuits, through which local certification agencies draw on the authority of more established accreditors.