Snake – According to Quran

فَأَلْقَى عَصَاهُ فَإِذَا هِيَ ثُعْبَانٌ مُبِينٌ – الأعراف: 107

So Moses threw down his staff and—behold!—it became a real snake. (Quran 7:107)

Complete Context

Then after them We sent Musa (Moses) with Our Signs to Fir’aun (Pharaoh) and his chiefs, but they wrongfully rejected them. So see how was the end of the Mufsidun (mischief-makers, corrupts, etc.). (Quran 7:103)

And Musa said: O Firon! surely I am a messenger from the Lord of the worlds: “Proper it is for me that I say nothing concerning Allah but the truth. Indeed I have come unto you from your Lord with a clear proof. So let the Children of Israel depart along with me.” (Quran 7:104-105)

[Fir’aun (Pharaoh)] said: “If you have come with a sign, show it forth, – if you are one of those who tell the truth.” (Quran 7:106)

So Moses threw down his staff and—behold!—it became a real snake. (Quran 7:107)

And he drew out his hand; thereupon it was white [with radiance] for the observers. (Quran 7:108)

The chiefs of the people of Fir’aun (Pharaoh) said: “This is indeed a well-versed sorcerer; Who wants to expel you from your land [through magic], so what do you instruct?” (Quran 7:109-110)

They said: Put him off and his brother, and send collectors into the cities: Who will bring you every learned magician.” (Quran 7:111-112)

And so the sorcerers came to Fir’aun (Pharaoh). They said: “Indeed there will be a (good) reward for us if we are the victors.” (Quran 7:113)

He said (Pharaoh): “Yes, and moreover you will (in that case) be of the nearest (to me).” (Quran 7:114)

They said: “O Musa (Moses)! Either you throw (first), or shall we have the (first) throw?” (Quran 7:115)

He [Musa (Moses)] said: “Throw you (first).” So when they threw, they bewitched the eyes of the people, and struck terror into them, and they displayed a great magic. (Quran 7:116)

And We (Allah) inspired Musa (Moses) (saying): “Throw your stick,” and behold! It swallowed up straight away all the falsehoods which they showed. (Quran 7:117)

Thus truth was confirmed, and all that they did was made of no effect. (Quran 7:118)
 So they were defeated there and then, and were returned disgraced. (Quran 7:119)

And the magicians fell down in prostration [to Allah ]. (Quran 7:120)
 They said: We believe in the Lord of the worlds, “The Lord of Musa (Moses) and Harun (Aaron).” (Quran 7:121-122)

Fir’aun (Pharaoh) said: “You have believed in him [Musa (Moses)] before I give you permission. Surely, this is a plot which you have plotted in the city to drive out its people, but you shall come to know. (Quran 7:123)

“Surely, I will cut off your hands and your feet on opposite sides, then I will crucify you all.” (Quran 7:124)

They said: Surely to our Lord shall we go back:  “And you take vengeance on us only because we believed in the Ayat (proofs, evidences, lessons, signs, etc.) of our Lord when they reached us! Our Lord! pour out on us patience, and cause us to die as Muslims.” (Quran 7:125-126)