Exodus 4:4

Then the LORD said to him, 'Reach out your hand and take it by the tail.' So Moses reached out and took hold of the snake and it turned back into a staff in his hand.

(New International Version)

But the LORD said to Moses, 'Stretch out your hand and grasp it by its tail'--so he stretched out his hand and caught it, and it became a staff in his hand--

(New American Standard Bible)

And the LORD said unto Moses, Put forth thine hand, and take it by the tail. And he put forth his hand, and caught it, and it became a rod in his hand:

(King James Version)