The word Ruh (Spirit) رُوح mentioned 21 times in Quran in 20 verses.

(2:87)

وَآتَيْنَا عِيسَى ابْنَ مَرْيَمَ الْبَيِّنَاتِ وَأَيَّدْنَاهُ بِرُوحِ الْقُدُسِ

And We did certainly give Moses the Torah and followed up after him with messengers. And We gave Jesus, the son of Mary, clear proofs and supported him with the Pure Spirit. But is it [not] that every time a messenger came to you, [O Children of Israel], with what your souls did not desire, you were arrogant? And a party [of messengers] you denied and another party you killed.

(2:253)

وَآتَيْنَا عِيسَى ابْنَ مَرْيَمَ الْبَيِّنَاتِ وَأَيَّدْنَاهُ بِرُوحِ الْقُدُسِ

 Those messengers – some of them We caused to exceed others. Among them were those to whom Allah spoke, and He raised some of them in degree. And We gave Jesus, the Son of Mary, clear proofs, and We supported him with the Pure Spirit. If Allah had willed, those [generations] succeeding them would not have fought each other after the clear proofs had come to them. But they differed, and some of them believed and some of them disbelieved. And if Allah had willed, they would not have fought each other, but Allah does what He intends.

(4:171)

وَكَلِمَتُهُ أَلْقَاهَا إِلَىٰ مَرْيَمَ وَرُوحٌ مِنْهُ

O People of the Scripture, do not commit excess in your religion or say about Allah except the truth. The Messiah, Jesus, the son of Mary, was but a messenger of Allah and His word which He directed to Mary and a soul [created at a command] from Him. So believe in Allah and His messengers. And do not say, “Three”; desist – it is better for you. Indeed, Allah is but one God. Exalted is He above having a son. To Him belongs whatever is in the heavens and whatever is on the earth. And sufficient is Allah as Disposer of affairs.

(5:110)

اذْكُرْ نِعْمَتِي عَلَيْكَ وَعَلَىٰ وَالِدَتِكَ إِذْ أَيَّدْتُكَ بِرُوحِ الْقُدُسِ

 [The Day] when Allah will say, “O Jesus, Son of Mary, remember My favor upon you and upon your mother when I supported you with the Pure Spirit and you spoke to the people in the cradle and in maturity; and [remember] when I taught you writing and wisdom and the Torah and the Gospel; and when you designed from clay [what was] like the form of a bird with My permission, then you breathed into it, and it became a bird with My permission; and you healed the blind and the leper with My permission; and when you brought forth the dead with My permission; and when I restrained the Children of Israel from [killing] you when you came to them with clear proofs and those who disbelieved among them said, “This is not but obvious magic.

(15:29)

فَإِذَا سَوَّيْتُهُ وَنَفَخْتُ فِيهِ مِنْ رُوحِي فَقَعُوا لَهُ سَاجِدِينَ

And when I have proportioned him and breathed into him of My [created] soul, then fall down to him in prostration

(16:2)

يُنَزِّلُ الْمَلَائِكَةَ بِالرُّوحِ مِنْ أَمْرِهِ عَلَىٰ مَنْ يَشَاءُ مِنْ عِبَادِهِ

He sends down the angels, with the inspiration of His command, upon whom He wills of His servants, [telling them], “Warn that there is no deity except Me; so fear Me.

(16:102)

قُلْ نَزَّلَهُ رُوحُ الْقُدُسِ مِنْ رَبِّكَ بِالْحَقِّ لِيُثَبِّتَ الَّذِينَ آمَنُوا

Say, [O Muhammad], “The Pure Spirit has brought it down from your Lord in truth to make firm those who believe and as guidance and good tidings to the Muslims.

(17:85)

وَيَسْأَلُونَكَ عَنِ الرُّوحِ قُلِ الرُّوحُ مِنْ أَمْرِ رَبِّي وَمَا أُوتِيتُمْ مِنَ الْعِلْمِ إِلَّا قَلِيلًا

And they ask you, [O Muhammad], about the soul. Say, “The soul is of the affair of my Lord. And mankind have not been given of knowledge except a little.

(19:17)

فَأَرْسَلْنَا إِلَيْهَا رُوحَنَا فَتَمَثَّلَ لَهَا بَشَرًا سَوِيًّا

And she took, in seclusion from them, a screen. Then We sent to her Our Angel, and he represented himself to her as a well-proportioned man.

(21:91)

وَالَّتِي أَحْصَنَتْ فَرْجَهَا فَنَفَخْنَا فِيهَا مِنْ رُوحِنَا

And [mention] the one who guarded her chastity, so We blew into her [garment] through Our angel [Gabriel], and We made her and her son a sign for the worlds.

(26:193)

نَزَلَ بِهِ الرُّوحُ الْأَمِينُ

The Trustworthy Spirit has brought it down

(32:9)

ثُمَّ سَوَّاهُ وَنَفَخَ فِيهِ مِنْ رُوحِهِ

Then He proportioned him and breathed into him from His [created] soul and made for you hearing and vision and hearts; little are you grateful.

(38:72)

فَإِذَا سَوَّيْتُهُ وَنَفَخْتُ فِيهِ مِنْ رُوحِي فَقَعُوا لَهُ سَاجِدِينَ

So when I have proportioned him and breathed into him of My [created] soul, then fall down to him in prostration.

(40:15)

يُلْقِي الرُّوحَ مِنْ أَمْرِهِ عَلَىٰ مَنْ يَشَاءُ مِنْ عِبَادِهِ لِيُنْذِرَ يَوْمَ التَّلَاقِ

 [He is] the Exalted above [all] degrees, Owner of the Throne; He places the inspiration of His command upon whom He wills of His servants to warn of the Day of Meeting.

(42:52)

وَكَذَٰلِكَ أَوْحَيْنَا إِلَيْكَ رُوحًا مِنْ أَمْرِنَا

And thus We have revealed to you an inspiration of Our command. You did not know what is the Book or [what is] faith, but We have made it a light by which We guide whom We will of Our servants. And indeed, [O Muhammad], you guide to a straight path

(58:22)

أُولَٰئِكَ كَتَبَ فِي قُلُوبِهِمُ الْإِيمَانَ وَأَيَّدَهُمْ بِرُوحٍ مِنْهُ

You will not find a people who believe in Allah and the Last Day having affection for those who oppose Allah and His Messenger, even if they were their fathers or their sons or their brothers or their kindred. Those – He has decreed within their hearts faith and supported them with spirit from Him. And We will admit them to gardens beneath which rivers flow, wherein they abide eternally. Allah is pleased with them, and they are pleased with Him – those are the party of Allah. Unquestionably, the party of Allah – they are the successful.

(66:12)

وَمَرْيَمَ ابْنَتَ عِمْرَانَ الَّتِي أَحْصَنَتْ فَرْجَهَا فَنَفَخْنَا فِيهِ مِنْ رُوحِنَا

And [the example of] Mary, the daughter of ‘Imran, who guarded her chastity, so We blew into [her garment] through Our angel, and she believed in the words of her Lord and His scriptures and was of the devoutly obedient.

(70:4)

تَعْرُجُ الْمَلَائِكَةُ وَالرُّوحُ إِلَيْهِ فِي يَوْمٍ كَانَ مِقْدَارُهُ خَمْسِينَ أَلْفَ سَنَةٍ

The angels and the Spirit will ascend to Him during a Day the extent of which is fifty thousand years.

(78:38)

يَوْمَ يَقُومُ الرُّوحُ وَالْمَلَائِكَةُ صَفًّا

The Day that the Spirit and the angels will stand in rows, they will not speak except for one whom the Most Merciful permits, and he will say what is correct.

(97:4)

تَنَزَّلُ الْمَلَائِكَةُ وَالرُّوحُ فِيهَا بِإِذْنِ رَبِّهِمْ مِنْ كُلِّ أَمْرٍ

 The angels and the Spirit descend therein by permission of their Lord for every matter.