Ablution for one whose hands are amputated
Question: How does a person whose hands have been cut off—or who was born without hands—perform ablution when there is not always someone available to help him?

Answer: He performs ablution to the extent of his ability, for the Almighty says, “So fear Allah as much as you are able” (64:16). If both hands are absent—whether they were severed at the elbows, for example, or were never created—he washes the remaining parts: the face, wipes the head, and washes the feet. Should someone be present to wash him and assist him, it becomes obligatory for him to perform ablution because help is available. Likewise, if he has a water pipe or tap that he can open so the water flows over his face, then wipe his head with something and wash his feet under the running water, he must do so, for in that situation he is able to make ablution, either through another person’s assistance or by letting water pour over him from a tap or pipe. If neither of these options exists and he is unable, he prays according to his condition and does not abandon the prayer; he washes whatever limbs he can.

Doubt concerning purification
Question: A man performed ablution and went to pray. During the prayer—or after finishing—he began to doubt whether he still had ablution. What should he do?

Answer: If a person has performed ablution with certainty and completed his purification, then afterward doubts whether his ablution has been nullified, he should ignore that doubt, because he is certain of being in a state of ablution, and certainty is not removed by doubt; for the Prophet (peace and blessings be upon him) said: