Which two men prophesied in the camp, so that Joshua asked Moses to stop them?

Answer: Eldad and Medad

Moses refused, saying, "I wish that all the LORD's people were prophets and that the LORD would place His Spirit on them!"

“Two men, however, had remained in the camp—one named Eldad and the other Medad—and the Spirit rested on them. They were among those listed, but they had not gone out to the tent, and they prophesied in the camp.”— Numbers 11:26 (BSB)