Outward proxyUnderlying matterRelevant consequenceQualifying sleepPossible unnoticed impurityRenewal of wuduValid seclusionPossibility of marital relationsFull dower and waiting periodQualifying travelVariable hardshipConcessions on prayer and fasting
Each case substitutes an observable criterion for an inward or difficult-to-prove fact. The substitution, however, remains limited to the rulings specified by the juristic rule. Their different prerequisites and legal effects cannot simply be transferred from one example to another.