Shaykh Muhammad Farooq Rafi
Benefits:
Another opinion of the Shafi'is is: The people of Hijaz used to perform istinja with stones, and their region was hot, so when they slept, their bodies would become drenched with sweat. Due to this, there was a risk that the sleeper’s hand might touch a place of impurity, a boil or sore, or some filth. (Therefore, they were commanded to wash their hands three times after waking from sleep.) Also, several rulings are derived from this hadith:
➊ .... If impurity falls into a small amount of water, the water becomes impure, even if the impurity is minor and does not alter the three characteristics of the water; still, this impurity renders the small amount of water impure. This is because the impurity that clings to the hand is extremely minute and not visible, and it was the habit of the people of Hijaz to use small vessels whose capacity was less than two pitchers.
➋ ..... There is a difference between water coming upon impurity and impurity falling into water. Thus, if impurity falls into water, it renders the water impure, and if water is poured over impurity, it removes that impurity.
➌ ..... Washing impurities seven times is not a general rule; rather, this legal ruling is specific to when a dog puts its mouth into a vessel.
➍ Complete purification of the place of impurity is not achieved by stones and clods alone. Rather, that place remains impure, but for the performance of prayer, this impurity has been excused.
➎ ..... Washing impurity three times is recommended (mustahabb), because when it is commanded to wash uncertain impurity three times, then for actual impurity this ruling applies even more so.
[نووي: 3/ 178]
➏ .... It is prohibited to put the hand into the vessel before washing it three times after waking up, and consensus (ijma‘) has been transmitted on this. However, the majority of scholars hold that this prohibition is one of dislike (tanzihi), not of strict prohibition (tahrimi). Therefore, if someone, contrary to this, dips his hand into the water, that water will not become impure, nor will that person be sinful.
[نووي: 179/3]
Source: Sahih Ibn Khuzaymah: Commentary by Muhammad Farooq Rafee, Page: 100