Can. 122

If an aggregate (universitas) which possesses public juridic personality is so divided either that a part of it is united with another juridic person or that a distinct public juridic person is erected from the separated part, the ecclesiastical authority competent to make the division, having observed before all else the intention of the founders and donors, the acquired rights, and the approved statutes, must take care personally or through an executor: 1/ that common, divisible, patrimonial goods and rights as well as debts and other obligations are divided among the juridic persons concerned, with due proportion in equity and justice, after all the circumstances and needs of each have been taken into account; 2/ that the use and usufruct of common goods which are not divisible accrue to each juridic person and that the obligations proper to them are imposed upon each, in due proportion determined in equity and justice.