Niyyah is the Islamic concept of performing an act for the sake of Allah. To truly perform wudu, you should center yourself and quiet your thoughts, focusing seriously on what you are doing (intending to perform wudu (ablution)). Niyyah is not said out loud and should be made in the heart; focusing on the phrase “Bismillah” (in the name of Allah) is a good way to accomplish the necessary centering. Say it out loud or silently to yourself, whichever makes you comfortable.

Make sure to use safe water to perform this ritual; in some warmer areas of the world, water may contain naegleria fowleri, an amoeba that, if inhaled into the nostrils, can cause a rare but usually fatal type of brain infection. Even tap water (usually in third world and developing countries) may be contaminated; to avoid this illness, boil water for one minute (three minutes at higher elevations) and leave it to cool before rinsing your nose with the water. [1] X Trustworthy Source Centers for Disease Control and Prevention Main public health institute for the US, run by the Dept. of Health and Human Services Go to source

If you have a cast, you are allowed to simply wipe over it instead. [2] X Research source

If you make a mistake in the order, you must begin your wudu from the beginning again.

In English, I testify that there is no one worthy of worship besides Allah. He is all by Himself and has no partner and I testify that Muhammad ﷺ is Allah’s servant and Rasul (Messenger) O Allah, count me (include me) among those who seek forgiveness and amongst those who stay clean O Allah, You are pure, I praise You and testify that only You are worthy of worship and I seek forgiveness from You I turn to You for repentance".

After intercourse, re-performing wudu alone is not enough to be able to perform Salat. There is another form of purification that must be performed known as Ghusul.