Правило 45
About the prohibition to baptize catechumens on Holy Saturday, who informed the bishop of this desire in less than two weeks.
About the fact that after two weeks of Pentecost one should not accept for enlightenment.
Greek original
Ὅτι οὐ δεῖ μετὰ δυὸ ἑβδομάδας τῆς Τεσσαρακοστῆς δέχεσθαι εἰς τὸ φώτισμα.
Parallel canons
IВс.14Трул.78Лаод.46