Musnad Abu Ya'la al-Mawsili 155:224

Abu Yasir Ammar al-Mustamli narrated to us, Yusuf bin Atiyyah narrated to us, he said: I heard Muhammad bin Sirin narrating from Abu Hurayrah, who said: A prophet from among the prophets was on a military expedition, so he rested under a tree, and an ant stung him. When he departed, he ordered that what was under the tree be burned. Then Allah revealed to him: "Was it not [just] one ant?"