Ash-Shama'il Al-Muhammadiyah, Book 1, Hadith 2 (English) ⓘ

Anas bin Malik (Radiallhu Anhu) reports, "Rasullullah (Sallallahu alaihe wasallam) was of a medium stature, he was neither very tall nor very short. He was very handsome, of medium built and his hair was neither very curly nor very straight (but was slightly wavy). He had a wheat-coloured complexion. When he walked, he leaned forward slightly".

حَدَّثَنَا حُمَيْدُ بْنُ مَسْعَدَةَ الْبَصْرِيُّ، قَالَ‏:‏ حَدَّثَنَا عَبْدُ الْوَهَّابِ الثَّقَفِيُّ، عَنْ حُمَيْدٍ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ‏:‏ كَانَ رَسُولُ اللهِ صلى الله عليه وسلم رَبْعَةً، لَيْسَ بِالطَّوِيلِ وَلا بِالْقَصِيرِ، حَسَنَ الْجِسْمِ، وَكَانَ شَعَرُهُ لَيْسَ بِجَعْدٍ، وَلا سَبْطٍ أَسْمَرَ اللَّوْنِ، إِذَا مَشَى يَتَكَفَّأُ‏.‏