Islam does not suspend the prayer because you cannot wash. It gives you a dry substitute.
Tayammum takes the place of wudu and, when needed, of ghusl. It takes about fifteen seconds and it is deliberately simple, because the situations it exists for are not ones in which you have time or comfort.
﴿ فَلَمْ تَجِدُوا مَاءً فَتَيَمَّمُوا صَعِيدًا طَيِّبًا فَامْسَحُوا بِوُجُوهِكُمْ وَأَيْدِيكُم مِّنْهُ ﴾
Fa lam tajidū mā'an fa tayammamū ṣaʿīdan ṭayyiban fa-msaḥū bi wujūhikum wa aydīkum minh
And if you find no water, then turn to clean earth and wipe your faces and your hands with it.
This is the same verse that gives the method for wudu and ghusl. The concession is written into the same sentence as the obligation.
When you may use it
- There is no water, or not enough — and what there is, is needed for drinking.
- You cannot reach the water safely, or getting to it would put you in danger.
- Using water would harm you — illness that water would worsen, a wound or burn, a cast or dressing that must stay dry, or cold severe enough to be dangerous.
- You cannot use water without help and there is nobody to help you — which matters for anyone unwell, injured, or in hospital.
It is a genuine allowance, not a loophole to feel guilty about. If one of these applies, tayammum is what you are supposed to do.
What to use
Clean earth. In practice: soil, sand, dust, or unpainted stone. A dusty windowsill, a stone wall, the ground outside.
It must be clean — not soiled, and not something that is no longer of the earth. Ordinary dust on a natural surface is exactly what is meant.
How to do it
- Intend it in your heart — that you are purifying yourself in place of wudu, or in place of ghusl. Nothing is said aloud.
- Say Bismillāh.
- Strike both palms lightly on the clean surface. Shake off any excess so your hands are dusty rather than caked.
- Wipe your face once with both palms.
- Wipe the back of your right hand with your left palm, then the back of your left hand with your right palm.
That is the whole thing. Two wipes, and you may pray.
◇ Scholars differ
How far up the arm. Some schools wipe to the wrists, others to the elbows. Wiping to the elbows satisfies both, so do that if you are unsure.
How many strikes. Some hold one strike is enough for both face and hands; others use a second strike before the hands.
What counts as clean earth. Some require the surface to carry dust; others accept any natural earthen surface, dusty or not.
The version above is the simplest and the most widely accepted. Ask your imam which your community follows.
How long it lasts
Tayammum is broken by everything that breaks wudu — and additionally, by water becoming available. The moment you can wash, the substitute ends.
◇ Scholars differ
Whether one tayammum may be used for more than one obligatory prayer is a genuine difference. Some hold it lasts like wudu until something breaks it; others hold a fresh tayammum is made for each obligatory prayer. Ask your imam.
Common situations
I have a cast, a wound or a dressing
Wash the parts you can, and wipe over the covering rather than removing it. Where neither is possible without harm, tayammum covers the part you cannot wash.
I am in hospital
This is one of the situations tayammum most clearly exists for. If you cannot get to a sink, cannot be washed, or are attached to equipment, you may use it. Ask a nurse whether anything dusty is within reach — and if truly nothing is, ask your imam, because there is further guidance for that case.
I am travelling and there is no water
On a plane, in a car, at a rest stop with nothing usable — tayammum applies. Do not let it become a reason to skip the prayer altogether.
The water is freezing and I have no way to heat it
If using it would genuinely harm you, tayammum applies. Discomfort is not harm; risk of injury or illness is. Judge honestly.
What this tells you about the prayer. Islam would rather you prayed with dust on your hands than not prayed at all. The purification can be substituted; the prayer cannot. That is worth remembering the next time you are tempted to skip one because circumstances are awkward.