Description of Prophet Muhammad S.A.W.:
Transmitted from Ali [son-in-law of the Prophet], may God be pleased with him, who, when asked to describe the Prophet, peace be upon him, would say: He was not too tall nor too short. He was medium sized. His hair was not short and curly, nor was it lank, but in between. His face was not narrow, nor was it fully round, but there was a roundness to it. His skin was white. His eyes were black. He had long eyelashes. He was big-boned and had wide shoulders. He had no body hair except in the middle of his chest. He had thick hands and feet. When he walked, he walked inclined, as if descending a slope. When he looked at someone, he looked at them in full face.
Between his shoulders was the seal of prophecy, the sign that he was the last of the prophets. He was the most generous-hearted of men, the most truthful of them in speech, the most mild-tempered of them, and the noblest of them in lineage. Whoever saw him unexpectedly was in awe of him. And whoever associated with him familiarly, loved him. Anyone who would describe him would say, I never saw, before him or after him, the like of him. Peace be upon him.
Paraphrased from a passage by Imam al-Ghazali, in Book 19 of his Revival of the Religious Sciences, Ihya Ulum al-Din:
'The Messenger of God (S.A.W.) was the mildest of men, but also the bravest and most just of men. He was the most restrained of people; never touching the hand of a woman over whom he did not have rights, or who was not his mahram. He was the most generous of men, so that never did a gold or silver coin spend the night in his house. If something remained at the end of the day, because he had not found someone to give it to, and night descended, he would go out, and not return home until he had given it to someone in need. From what Allah gave him [...] he would take only the simplest and easiest foods: dates and barley, giving anything else away in the path of Allah. Never did he refuse a gift for which he was asked. He used to mend his own sandals, and patch his own clothes, and serve his family, and help them to cut meat. He was the shyest of men, so that his gaze would never remain long in the face of anyone else. He would accept the invitation of a freeman or a slave, and accept a gift, even if it were no more than a gulp of milk, or the thigh of a rabbit, and offer something in return. He never consumed anything given in sadaqa. He was not too proud to reply to a slave-girl, or a pauper in rags. He would become angered for his Lord, never for himself; he would cause truth and justice to prevail even if this led to discomfort to himself or to his companions.'
'He used to bind a stone around his waist out of hunger. He would eat what was brought, and would not refuse any permissible food. If there was dates without bread, he would eat, if there was roast meat, he would eat; if there was rough barley bread, he would eat it; if there was honey or something sweet, he would eat it; if there was only yogurt without even bread, he would be quite satisfied with that.'
'He was not sated, even with barley-bread, for three consecutive days, until the day he met his Lord, not because of poverty, or avarice, but because he always preferred others over himself.'
'He would attend weddings, and visit the sick, and attend funerals, and would often walk among his enemies without a guard. He was the most humble of men, and the most serene, without arrogance. He was the most eloquent of men, without ever speaking for too long. He was the most cheerful of men. He was afraid of nothing in the dunya. He would wear a rough Yemeni cloak, or a woolen tunic; whatever was lawful and was to hand, that he would wear. He would ride whatever was to hand: sometimes a horse, sometimes a camel, sometimes a mule, sometimes a donkey. And at times he would walk barefoot, without an upper garment or a turban or a cap. He would visit the sick even if they were in the furthest part of Madina. He loved perfumes, and disliked foul smells.'
'He maintained affectionate and loyal ties with his relatives, but without preferring them to anyone who was superior to them. He never snubbed anyone. He accepted the excuse of anyone who made an excuse. He would joke, but would never say anything that was not true. He would laugh, but not uproarously. He would watch permissible games and sports, and would not criticise them. He ran races with his wives. Voices would be raised around him, and he would be patient. He kept a sheep, from which he would draw milk for his family. He would walk among the fields of his companions. He never despised any pauper for his poverty or illness; neither did he hold any king in awe simply because he was a king. He would call rich and poor to Allah, without distinction.'
In him, Allah combined all noble traits of character; although he neither read nor wrote, having grown up in a land of ignorance and deserts in poverty, as a shepherd, and as an orphan with neither father nor mother. But Allah Himself taught him all the excellent qualities of character, and praiseworthy ways, and the stories of the early and the later prophets, and the way to salvation and triumph in the Akhira, and to joy and detachment in the dunya, and how to hold fast to duty, and to avoid the unnecessary. May Allah give us success in obeying him, and in following his sunna. Amin ya rabb al-alamin.