Musnad Ahmad 946
It was narrated that ‘Ali (رضي الله عنه) said:
The Messenger of Allah (ﷺ) was neither short nor tall; he had a large head, wavy hair, a big beard and a reddish complexion. There was a long line of hair running from his chest to his navel. He had large joints and large hands and feet. When he walked, he walked energetically as if walking downhill, I have never seen anyone like him before or since.
حَدَّثَنَا عَبْد اللَّهِ، حَدَّثَنِي سُرَيْجُ بْنُ يُونُسَ، حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ الْأُمَوِيُّ، عَنِ ابْنِ جُرَيْجٍ، عَنْ صَالِحِ بْنِ سُعَيْدٍ، أَوْ سَعِيدٍ عَنْ نَافِعِ بْنِ جُبَيْرِ بْنِ مُطْعِمٍ، عَنْ عَلِيٍّ، رَضِيَ اللَّهُ عَنْهُ قَالَ كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ لَا قَصِيرٌ وَلَا طَوِيلٌ عَظِيمَ الرَّأْسِ رَجِلَهُ عَظِيمَ اللِّحْيَةِ مُشْرَبًا حُمْرَةً طَوِيلَ الْمَسْرُبَةِ عَظِيمَ الْكَرَادِيسِ شَثْنَ الْكَفَّيْنِ وَالْقَدَمَيْنِ إِذَا مَشَى تَكَفَّأَ كَأَنَّمَا يَهْبِطُ فِي صَبَبٍ لَمْ أَرَ قَبْلَهُ وَلَا بَعْدَهُ مِثْلَهُ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ‏.‏