Perform ablutions correctly according to Islamic teachings.

This hadith is about the importance of performing ablution correctly. It was narrated by 'Uthman bin 'Affan that he saw the Messenger of Allah performing ablution and wiping his head once. This means that when one performs ablution, they should wipe their head only once with wet hands. This is an important part of the ritual as it helps to purify oneself before prayer or any other religious activity. It also teaches us to be mindful and precise in our actions so that we can perform them correctly according to Islamic teachings.