Follow Sunnah, Perform tayammum when necessary.

The hadith narrated by 'Ammar bin Yasir tells us about a practice of performing dry ablution that was taught by the Prophet Muhammad (peace be upon him). This practice is known as tayammum and it involves wiping one's arms up to their shoulders. This is done in place of washing with water when water is not available or if someone is ill and cannot use water. It is a sunnah, or an act of worship that has been recommended by the Prophet Muhammad, and it serves as an alternative form of purification for Muslims when they are unable to perform wudu with water. This hadith teaches us about an important aspect of Islamic worship and encourages us to follow in the footsteps of our beloved prophet in all aspects of our lives.