The following condition must be observed in the clothes for Salaat: 
- The clothes must be TAHIR.
- The clothes must be MUBAH.
- Mubah means that the clothes must be lawfully yours. Either you are the owner or you have permission to use it.
- Ghasbi is the opposite of Mubah. So a prayer offered in such clothing is Batil.
FOR MEN ONLY:
- The clothes should not be made of gold (whether pure or mixed). Wearing any gold is Haraam for men at all times, not only during Salaat.
- The clothes should not be made of pure silk. Wearing pure silk is Haraam for men at all times, not only during Salaat.
MINIMUM AMOUNT OF CLOTHING REQUIRED FOR SALAAT:
For men:
A pair of trousers covering from the waist to at least the knees.
For women:
Cover the whole body with a 'chaadar' – it is not
necessary to cover the face, the hands to the wrist
or the upper feet up to the ankles.
Exercise: Clothes for Prayer:
For this exercise try and use the Risala with your parents. Put in the Masail No. if you can.
1. Your cousin Abbas has come to visit you for the first time. It is time for prayers and he starts praying in one corner of your sitting room. He prays with his tie and chain, which are made of silk and gold. Is his Salaat Batil? Explain. Masail No. ________
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2. What would have happened if in the above example, the person visiting your house was your cousin Sabira also wearing the gold chain and school silk tie? Would her Salaat be Batil? Why? Masail No. ________
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3. Define the following terms:
Ghasbi: ____________________________________________________________________________________________________
Najis: ______________________________________________________________________________________________________
Haraam: ____________________________________________________________________________________________________