﴿ فَأَلْقَىٰ عَصَاهُ فَإِذَا هِىَ ثُعْبَانٌۭ مُّبِينٌۭ ﴾

“Thereupon [Moses] threw down his staff - and lo! it was a serpent, plainly visible;”

(Then he) Moses (flung down his staff and it became a serpent) a yellow, male serpent (manifest) as huge as any serpent can be,