7.الْأَعْرَاف

فَاَلۡقٰى عَصَاهُ فَاِذَا هِىَ ثُعۡبَانٌ مُّبِيۡنٌ‌‌ ۖ‌ۚ‏

So Musa (Moses) put his staff (down), and at once it changed into a veritable serpent.