فَسَاهَمَThen he (agreed to) cast lots,means, to draw lots."فَكَانَ مِنْ الْمُدْحَضِينَand he was among the losers.means among those who have been overcome.This was because the ship was being pounded by the waves on all sides, and they were at risk of drowning, so they drew lots, and whoever lost would be thrown overboard so as to lighten the load. The Prophet of Allah Yunus, peace be upon him, lost the draw three times, but they did not want to throw him overboard. He took off his garment so that he could throw himself into the sea, and they tried to stop him.فَالْتَقَمَهُ الْحُوتُ وَهُوَ مُلِيمٌ