Rationally recognizable substitute-performance has a further complete/deficient distinction in duties owed to people.
• Complete: a wrongfully taken watch is destroyed, then a watch like it is given as its equivalent.
• Deficient: a goat is killed; another goat is not identical in all its qualities. Its value is given as an equivalent in meaning rather than in exact form.
Here, complete and deficient describe the kind of equivalence. Both belong under rational-equivalent Qada, not the earlier branch of original-item Ada.
- An Equivalent Item or Its Value