Annotatio VI §.I: Indigni secundum quid — weak lapse toward Supper without due repentance
Second: unworthy in a qualified sense, only as to approaching the Supper.
Otherwise habitually pious, they have fallen against conscience by fleshly weakness and come to the Lord’s table without enough self-examination — without sufficient repentance and sins wiped in Christ’s blood by living faith.
Latin
VEL INDIGNI SECUNDUM QUID & respectu solius S. Cœnæ adeundæ, qui alioquin habitualiter pii, in peccatum, tamen contra conscientiam, ex imbecillitate quadam carnis, lapsi, S. Domini cœnam accedunt, non ante exploratis satis se ipsis, i. e. pœnitentia sufficienti, peccatis suis deletis, in Sanguine Christi, fide viva sibi applicato.