Does the manner in which a sleeping person's hand is confined affect the obligation to wash it before dipping it into a container?

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The obligation to wash the hand three times upon waking is universal, irrespective of whether the sleeper's hand was unrestrained, tied, inside a pouch, or whether the sleeper was wearing trousers or not. This ruling is established based on the general nature of the Prophet's command: 'When one of you awakens from his sleep, let him not put his hand into the vessel until he washes it three times.' The ruling is tied to the presumption (dhann) of potential impurity, not the absolute certainty of contamination, similar to the obligation of *istibra'* (purification period) even for women past childbearing age or minors. Furthermore, impurity might result from causes other than touching the private parts, such as touching a sore, scratching the body causing blood under the nails, or nosebleed. If the ruling were based on certainty of impurity, the hand or the water would be deemed impure, which is not the case. Therefore, the obligation applies generally to everyone receiving the command.