The jurists consider the two hands as one limb, and the two feet as one limb, and sequence is not mandatory within a single limb. The statement of 'Ali and Ibn Mas'ud has indicated this.

Section: If one performs his wudu' in reverse, beginning with something of his members before his face, what he washed before his face is not counted for him. If he then washes his face while his intention remains, or a short time after it, it is counted for him, and then he performs the sequence for the remaining three members. If he washes his face, then wipes his head, then washes his hands and his feet, he must repeat the wiping of his head and the washing of his feet. If he washes his face and his hands, then washes his feet, then wipes his head, his wudu' is valid except for the washing of the feet. If he performs his entire wudu' in reverse, only the washing of his face is valid for him (2). If he performs wudu' in reverse four times, his wudu' is valid; he acquires the washing of one limb from each time if they are close together. The school of al-Shafi'i is like what we have mentioned. If he washes his members all at once, only the washing of his face is valid, because he did not perform the sequence. If he is immersed in flowing water and no more than a single flow passes over his members, then it is the same. If four flows pass over him, and we say that washing suffices for wiping, then it suffices him, just as if he had performed wudu' four times. If the water is stagnant, some of our companions said: If he brings out his face, then his hands, then wipes his head, then exits the water, it suffices him, because the hadath (impurity) is only lifted by the separation of the water from the member. Ahmad explicitly stated regarding a man who wanted to perform wudu' and immersed himself in the water, then exited the water, that he must wipe his head and wash his feet. This indicates that if the water is flowing and a single flow passes over him, he is satisfied by wiping his head [then washing] (3) his feet. If both types of hadath (minor and major) are combined, the requirement for sequence and immediacy falls away, according to what we shall mention, if God Almighty wills.