I heard ʿAli ؓ say: The Prophet ﷺ instructed lbn Mas’ood to climb up a tree and he told him to bring him something from it, and his Companions looked at the shins of ‘Abdullah bin Masood when he climbed the tree and laughed at how thin his shins were, The Messenger of Allah ﷺ said: “Why are you laughing? The leg of ‘Abdullah will be heavier in the Balance on the Day of Resurrection than (Mount) Uhud.”  

سَمِعْتُ عَلِيًّا يَقُولُ أَمَرَ النَّبِيُّ ﷺ ابْنَ مَسْعُودٍ فَصَعِدَ عَلَى شَجَرَةٍأَمَرَهُ أَنْ يَأْتِيَهُ مِنْهَا بِشَيْءٍ فَنَظَرَ أَصْحَابُهُ إِلَى سَاقِ عَبْدِ اللهِ بْنِ مَسْعُودٍ حِينَ صَعِدَ الشَّجَرَةَ فَضَحِكُوا مِنْ حُمُوشَةِ سَاقَيْهِ فَقَالَ رَسُولُ اللهِ ﷺ مَا تَضْحَكُونَ؟ لَرِجْلُ عَبْدِ اللهِ أَثْقَلُ فِي الْمِيزَانِ يَوْمَ الْقِيَامَةِ مِنْ أُحُدٍ  

[Machine] I heard Ali say that the Prophet ﷺ commanded Ibn Mas'ud to climb a tree and bring something from it. His companions looked at the thinness of his legs and laughed. The Prophet ﷺ then said, "What makes you laugh? The weight of Abdullah in the scale is heavier than Mount Uhud."  

سَمِعْتُ عَلِيًّا يَقُولُ أَمَرَ النَّبِيُّ ﷺ ابْنَ مَسْعُودٍ أَنْ يَصْعَدَ شَجَرَةً فَيَأْتِيَهُ بِشَيْءٍ مِنْهَا فَنَظَرَ أَصْحَابُهُ إِلَى حُمُوشَةِ سَاقَيْهِ فَضَحِكُوا فَقَالَ النَّبِيُّ ﷺ «مَا يُضْحِكُكُمْ؟ لَرِجْلُ عَبْدِ اللهِ فِي الْمِيزَانِ أَثْقَلُ مِنْ أُحُدٍ»