Jami` at-Tirmidhi Book 49, Hadith 34
said: "When 'Ali in breast. He was the most truthful of people in speech, the softest of them in nature, and the most noble of them in his relations ('Ishrah). Whoever saw him for the first time (Badihah) would fear him, and whoever got to know him, loved him. The one who tried to describe him would have to say: 'I have not seen before him or after him anyone who resembles him (ﷺ).'"
"The Prophet (ﷺ) was not tall nor was he short, his hands and feet were thick, his head was large, he was big-boned, he had a long Masrubah (the line of hair from the chest to the navel), and whenever he walked, he leaned forward as if he was going down a decline. I have not seen anyone before him nor after him that resembled him (ﷺ)."
that 'Aishah said: "The Messenger of Allah (ﷺ) did not speak quickly like you do now, rather he would speak so clearly, unmistakably, that those who sat with him would memorize it."