Русско-англо-русский юридический словарь

DELEGATION, civil law. It is a kind of novation, (q.v.) by which the original debtor, in order to be liberated from his creditor, gives him a third person, who becomes obliged in his stead to the creditor, or to the person appointed by him. (Law Dictionary)

The transfer of an obligation to a new obligor on the contrary modifies the context in which the security has been granted. (UNIDROIT Principles)

A transfer of an obligation secured by a mortgage includes the transfer of the mortgage. (Louisiana Civil Code)