Yahya related to me from Malik from Zayd ibn Aslam that a mancame to Umar ibn al-Khattab and said, "Amir al-muminin, I killed somelocusts with my whip when I was in ihram," and Umar said to him, "Givea handful of food."
USC-MSA web (English) reference: Book 20, Hadith 244
Arabic reference: Book 20, Hadith 941