"Now ask for whatever you want"
'Umar saw a beggar asking people, with a sack full of food on his back. He took the food and gave it to the camels of Zakah, then he said to him, "Now ask for whatever you want". (Manaaqib Ameer al-Mu'mineen, pg. 101)
"Stop walking like that"
A man came swinging his arm and strutting, and 'Umar said to him: "Stop walking like that." He said, "I cannot" 'Umar whipped him, then he struted, and he whipped him again and he stopped strutting. 'Umar said, "If I do not whip one like this then who should I whip?" The man came to him after that nad said, "May Allah reward you with good; it was nothing but a Shaytan whom Allah sent away through you." (Akbaar 'Umar, pg. 175)
"Do not make our religion dead"
'Umar saw a man who looked as if he was dying because of his ' 'asceticism'. He hit him with his stick and said: "Do not make our religion dead, may Allah kill you" (Akhbaar 'Umar, pg. 190)
It was narrated from ash-Shifaa' bint 'Abdullah that she saw some people who walked slowly and walked slowly. She said: "Who are these?" They said, "Ascetics". She said, "By Allah, when 'Umar ibn al-Khattaab spoke, he could be heard, when he walked he walked fast, and when he hit he caused pain, and by Allah, he was a true ascetic" (Ash-Shaykaan min Riawayat al-Baladhuri, pg. 226)