Usamah's account does not mean that claims can never be investigated. Its clear lesson is that a professed declaration must not be nullified merely by guessing what lies in the heart.
The debt account does not permit a lender to stipulate an extra payment; it describes voluntary generosity when settling the debt.
The modesty account does not settle every detailed legal question. The two mothers' story is not permission to hurt children. The riding account does not require refusing all invitations.
Method of understanding: First establish what happened and what was actually taught; only then apply the lesson within its appropriate limits.