The Prophet of Allah, sallallaahu ‘alayhi wa sallam, used to try and raise their morale and clarify that people do not compete for superiority based on their bodies
Ibn Mas`ood (a Companion) narrated that he was climbing an Araak tree in order to get a twig used as a natural toothbrush (Miswaak). He had very thin legs, and the wind began to move him left and right, making the people laugh at him. The Messenger of Allah, sallallaahu ‘alayhi wa sallam, said: “What are you laughing at?” They replied: “O Allah’s Prophet, we are laughing at how skinny his legs are.” The Prophet of Allah, sallallaahu ‘alayhi wa sallam, said: “I swear by Him in Whose hand is my soul, they will be heavier on the scale than Mount Uhud.”
Thus, the thinness and leanness of ‘Abdullaah ibn Mas’ood did not harm him, because the owner of those two legs has many virtues thatmake him heavy on the scale, for he was one that combined having a beautiful character and a pure personal life.