1. When the visible substance is completely washed away, the garment becomes clean.
2. When dried impurity adhering to a khuff is completely rubbed away, prayer is permitted if the stated conditions are satisfied.
3. If impurity on earth dries and its trace vanishes, the stated Hanafi rule permits prayer there but not tayammum from it.
4. For invisible impurity, adequate washing continues until there is a well-founded conviction of purity.
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Types of Impurity and Methods of Purification
1. When the visible substance is completely washed away, the garment becomes clean.
2. When dried impurity adhering to a khuff is completely rubbed away, prayer is permitted if the stated conditions are satisfied.
3. If impurity on earth dries and its trace vanishes, the stated Hanafi rule permits prayer there but not tayammum from it.
4. For invisible impurity, adequate washing continues until there is a well-founded conviction of purity.