I found myself Junub (in a state of post-sexual ritual impurity) in the morning and could not find water, so I performed Tayammum (dry ablution with clean earth). Should I perform Tayammum once more? If I perform it once, will it be sufficient or not?
May Allah bless you for it.
If you search for water but cannot find it or you are unable to reach it and you fear that you may miss the time of a particular Salah (Prayer), you can perform Tayammum. The way to perform Tayammum is to strike the pure earth with your hands once, then rub your face with the palms of your hands, and the back of your right hand with the palm of your left hand, and the back of your left hand with the palm of your right hand. Allah (Exalted be He) says:
But if you are ill or on a journey, or any of you comes after answering the call of nature, or you have been in contact with women (i.e. sexual intercourse), and you find no water, then perform Tayammum with clean earth and rub therewith your faces and hands.
(Part No. 4; Page No. 178) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.