It was narrated that Abu Dharr said:
"I heard the Prophet (ﷺ) [SAW] say: 'Some of the best things with which you can change gray hair are Henna and Katam.'"
Abu Hurairah said:
"The Messenger of Allah (ﷺ) said: 'If a person's relative is killed, he has the choice of two things: Either he may retaliate, or he may take the ransom."'