Abdullah reported that Allah's Messenger ( صلی اللہ علیہ وسلم ) got his head shaved (after slaughtering the sacrificial animal on the 10th of Dhu'l-Hijja), and so did a group of Companions, while some of them got their hair clipped. Abdullah said:
Allah's Messenger (may peace'be upon him) observed once or twice: May Allah have mercy upon those who get their heads shaved. And he also said: Upon those too who got their hair clipped.