Appears 13 times in the Quran. (Root: الف)
  1. And you will most certainly find them the greediest of men for life (greedier) than even those who are polytheists; every one of them loves that he should be granted a life of a thousand years, and his being granted a long life will in no way remove him further off from the chastisement, and Allah sees what they do.

  2. Have you not considered those who went forth from their homes, for fear of death, and they were thousands, then Allah said to them, Die; again He gave them life; most surely Allah is Gracious to people, but most people are not grateful.

  3. When you said to the believers: Does it not suffice you that your Lord should assist you with three thousand of the angels sent down?

  4. Yea! if you remain patient and are on your guard, and they come upon you in a headlong manner, your Lord will assist you with five thousand of the havoc-making angels.

  5. When you sought aid from your Lord, so He answered you: I will assist you with a thousand of the angels following one another.

  6. O Prophet! urge the believers to war; if there are twenty patient ones of you they shall overcome two hundred, and if there are a hundred of you they shall overcome a thousand of those who disbelieve, because they are a people who do not understand.

  7. For the present Allah has made light your burden, and He knows that there is weakness in you; so if there are a hundred patient ones of you they shall overcome two hundred, and if there are a thousand they shall overcome two thousand by Allah's permission, and Allah is with the patient.

  8. And they ask you to hasten on the punishment, and Allah will by no means fail in His promise, and surely a day with your Lord is as a thousand years of what you number.

  9. And certainly We sent Nuh to his people, so he remained among them a thousand years save fifty years. And the deluge overtook them, while they were unjust.

  10. He regulates the affair from the heaven to the earth; then shall it ascend to Him in a day the measure of which is a thousand years of what you count.

  11. And We sent him to a hundred thousand, rather they exceeded.

  12. To Him ascend the angels and the Spirit in a day the measure of which is fifty thousand years.

  13. The grand night is better than a thousand months.