Whether any precept should be given about charity?

Objections

Objection 1 : It would seem that no precept should be given about charity. For charity imposes the mode on all acts of virtue, since it is the form of the virtues as stated above (Question [23], Article [8]), while the precepts are about the virtues themselves. Now, according to the common saying, the mode is not included in the precept. Therefore no precepts should be given about charity.
Objection 2 : Further, charity, which "is poured forth in our hearts by the Holy Ghost" (Rm. 5:5), makes us free, since "where the Spirit of the Lord is, there is liberty" (2 Cor. 3:17). Now the obligation that arises from a precept is opposed to liberty, since it imposes a necessity. Therefore no precept should be given about charity.
Objection 3 : Further, charity is the foremost among all the virtues, to which the precepts are directed, as shown above (FS, Question [90], Article [2]; FS, Question [100], Article [9]). If, therefore, any precepts were given about charity, they should have a place among the chief precepts which are those of the decalogue. But they have no place there. Therefore no precepts should be given about charity.