Muhammad bin 'Uthman bin Khalid محمد بن عثمان بن خالد · The Book of the Sunnah

"Umar bin Al-Khattab sent us to Kufah, and he accompanied us as far as a place called Sirar. He said: 'Do you know why I walked with you?' We said: 'Because of the rights of the Messenger of Allah (ﷺ) and because of the rights of the Ansar.' He said: 'No, rather it is because of words that I wanted to say to you. I wanted you to memorize it due to my walking with you. You are going to…

"The Messenger of Allah said: 'The first person with whom Allah will shake hands will be 'Umar, (and he is) the first person to be greeted with the Salam, and the first person who will be taken by the hand and admitted into Paradise.'"