Whether this sacrament has a form?

Objections

Objection 1 : It would seem that this sacrament has no form. Because, since the efficacy of the sacraments is derived from their institution, as also from their form, the latter must needs be appointed by the institutor of the sacrament. But there is no account of the form of this sacrament being instituted either by Christ or by the apostles. Therefore this sacrament has no form.
Objection 2 : Further, whatever is essential to a sacrament is observed everywhere in the same way. Now nothing is so essential to a sacrament that has a form, as that very form. Therefore, as in this sacrament there is no form commonly used by all, since various words are in use, it seems that this sacrament has no form.
Objection 3 : Further, in Baptism no form is needed except for the sanctification of the matter, because the water is "sanctified by the word of life so as to wash sin away," as Hugh states (De Sacram. ii). Now the matter of this sacrament is already consecrated. Therefore it needs no form of words.