It was narrated from 'Uthman that: The Messenger of Allah performed ablution and ran his fingers through his beard.
The act of running one’s fingers through one’s beard after performing wudu is a sign of respect for oneself and for Allah, as it shows that we are taking care to maintain our appearance in a way that pleases Him. Furthermore, this hadith teaches us about the importance of following the Sunnah - or teachings - set by our beloved Prophet Muhammad (PBUH). By following these teachings we can strive to become better people who are closer to Allah SWT.