The word(s) "necks" appears 13 time(s) in 13 verse(s) in Quran in Mohsin Khan translation.

(1) And let not those who covetously withhold of that which Allah has bestowed on them of His Bounty (Wealth) think that it is good for them (and so they do not pay the obligatory Zakat ). Nay, it will be worse for them; the things which they covetously withheld shall be tied to their necks like a collar on the Day of Resurrection . And to Allah belongs the heritage of the heavens and the earth; and Allah is Well-Acquainted with all that you do.

(2) O you who have been given the Scripture (Jews and Christians)! Believe in what We have revealed (to Muhammad صلى الله عليه وسلم) confirming what is (already) with you, before We efface faces (by making them like the back of necks; without nose, mouth) and turn them hindwards, or curse them as We cursed the Sabbath-breakers . And the Commandment of Allah is always executed.

(3) Allah has made the Ka'bah, the Sacred House, an asylum of security and benefits (e.g.Hajj and 'Umrah) for mankind, and also the Sacred Month and the animals of offerings and the garlanded (people or animals marked with the garlands on their necks made from the outer part of the stem of the Makkah trees for their security), that you may know that Allah has knowledge of all that is in the heavens and all that is in the earth, and that Allah is the All-Knower of each and everything.

(4) (Remember) when your Lord revealed to the angels, "Verily, I am with you, so keep firm those who have believed. I will cast terror into the hearts of those who have disbelieved, so strike them over the necks, and smite over all their fingers and toes."

(5) And if you (O Muhammad صلى الله عليه و سلم) wonder (at these polytheists who deny your message of Islamic Monotheism and have taken besides Allah others for worship who can neither harm nor benefit), then wondrous is their saying: "When we are dust, shall we indeed then be (raised) in a new creation?" They are those who disbelieved in their Lord! They are those who will have iron chains tying their hands to their necks. They will be the dwellers of the Fire to abide therein.

(6) (They will be) hastening forward with necks outstretched, their heads raised up (towards the sky), their gaze returning not towards them and their hearts empty (from thinking because of extreme fear).

(7) And tell the believing women to lower their gaze (from looking at forbidden things), and protect their private parts (from illegal sexual acts) and not to show off their adornment except only that which is apparent (like both eyes for necessity to see the way, or outer palms of hands or one eye or dress like veil, gloves, head-cover, apron, etc.), and to draw their veils all over Juyubihinna (i.e. their bodies, faces, necks and bosoms) and not to reveal their adornment except to their husbands, or their fathers, or their husband's fathers, or their sons, or their husband's sons, or their brothers or their brother's sons, or their sister's sons, or their (Muslim) women (i.e. their sisters in Islam), or the (female) slaves whom their right hands possess, or old male servants who lack vigour, or small children who have no sense of feminine sex. And let them not stamp their feet so as to reveal what they hide of their adornment. And all of you beg Allah to forgive you all, O believers, that you may be successful.

(8) If We will, We could send down to them from the heaven a sign, to which they would bend their necks in humility.

(9) Those who were deemed weak will say to those who were arrogant: "Nay, but it was your plotting by night and day: when you ordered us to disbelieve in Allah and set up rivals to Him!" And each of them (parties) will conceal their own regrets (for disobeying Allah during this worldly life), when they behold the torment. And We shall put iron collars round the necks of those who disbelieved. Are they requited aught except what they used to do?

(10) Verily We have put on their necks iron collars reaching to the chins, so that their heads are raised up.