CaseTypeWhy?Unsuitable sale subjectFormationNo operative contract arisesLoss of nisab during yearCompletionRequired basis is not completedSale with stipulated optionCommencementImmediate effect is restrictedOption upon inspectionContinuationAn existing sale becomes defeasible
The term impediment thus covers four legally different operations. Ask whether the obstacle concerns the legal cause or the legal ruling, and, if the ruling is involved, whether the difficulty is its inception or its persistence.