performed such-and-such a deed, or united with such-and-such a thing, or had something indwell in him to the exclusion of Zayd the accountant and the scribe. Rather, whatever act Zayd the physician (1) carried out, or whatever quality was attributed to him in that illustration, is likewise attributed to Zayd the scribe and accountant (2).
The Christians, on the other hand, affirm this triad of hypostases while also asserting that the one who became united is nonetheless one; accordingly, they declare the Messiah to be God, for they say that the described attribute united with him, and they further hold him (3) to be the Son of God, because they claim (4) that only the essence which is the Word united with him—or that the Word alone united with him, to the exclusion of the Father, who is Pure Existence, and apart from the Holy Spirit (5), both of whom are likewise essences. It thus becomes clear that by espousing both of these views the Christians have combined two mutually contradictory propositions, something that is among the most flagrantly corrupt notions to any sound mind (6). Each of the two positions is unbelief, just as Allah has declared them unbelievers. As for their statement that He is “the third of three,” this is because they worship the mother whom they regard as the Mother of God—and that, too, is unbelief.