kaṭhina

neuter a framework (covered with a mat) to which the cloth for making robes was attached while being sewn; esp. kaṭhinaṃ attharati

1. spreads or covers the kaṭhina, i.e. makes a robe using the kaṭhina.
2. participates, at the end of the rains-residence, in a communal robe-making, during which certain rules and practices are suspended (perhaps in order to facilitate the robe making); this involves: a) a saṅghakamma allotting the material (and the use of the kaṭhina) to a bhikkhu according to need and seniority; b) the preparation of the robe, by all the participating bhikkhus, from washing the cloth to adding the kappabindu the approval of the robe by one or more bhikkhus . Only those can take part and share the privileges who have spent the earlier rain-retreat within that sīmā and have participated in the pavāranā ceremony. A minimum of five bhikkhus is required, but unqualified ones may make up the number without sharing the privileges. The donor gives cloth, sewing materials and food to the participating bhikkhus . The whole process must be completed in one day.
3. displays the finished robe.

kaṭhinaṃ attharataṃ¹

neuter

1. As well as referring to the literal covering of the kaṭhina and the proper carrying-out of the communal robe making, also describes a state existing in an āvāsa where qualified bhikkhu have a claim on material given to the saṅgha (and on the use of the kaṭhina) and enjoy the five concessions or privileges; at the end of five months (or earlier by decision of the saṅgha) this special state is ended (kaṭhinam uddhariyati, the kaṭhina is removed or put away, ubbhataṃ); the claims and privileges of individual bhikkhus end at this time, or before, if they leave the āvāsa, not intending to return.
2. the kaṭhina robemaking and ritual; (the materials for) the kaṭhina ceremony.

kaṭhinaṃ attharataṃ²

(?) also implies that the special concessions associated with the kaṭhina ritual are in force

kaṭhinaṃ anattharataṃ

(?) also implies that the special concessions associated with the kaṭhina ritual are not in force