Two of Ibn Mas’ud legs are heavier in the balance than mount uhud on day of judgement
Zuhr Ibn Habeesh related from Ibn Mas’ud [RA] that he had very thin legs. (One day), the wind flung away (his garments thus exposing them). The people laughed at him.
Then Messenger of Allah [SAW] said:
What are you laughing at?
O Prophet[SAW], from the thinness of his legs.
By the One who has my soul in His Hand, the two of them (ie his two legs) are indeed heavier in the Balance than Uhud (a large mountain in Madinah).
Musnad Ahmad and its chain is good and strong