Laylatul Qadr

Among the unique virtues of these special nights is that Laylat al-Qadr is among them. Allah says in Suratul Dukhan 44: 1-4:

1-Ha-Mim.
2- By the Book that makes things clear
3- We sent it down during a blessed night: for We (ever) wish to warn (against Evil).
4- In that (night) is made distinct every affair of wisdom

In Sura al-Qadr (97: 1-5), Allah said:

1-    We have indeed revealed this (Message) in the Night of Power:
2- And what will explain to thee what the Night of Power is?
3- The Night of Power is better than a thousand Months.
4- Therein come down the angels and the Spirit by Allah’s permission, on every errand:
5- Peace! This until the rise of Morn!

On the night of Qadr:

“Therein (that night) is decreed every matter of ordainments” [Sura al-Dukhan 44:4 ], i.e., the affairs of that year are dispatched from al-Lawh al-Mahfuz to the angels who record the decrees: who will live, who will die, what provision people will be given, what will happen until the end of that year, every matter of ordainments is decreed, and it cannot be altered or changed. (See Tafsir Ibn Kathir, 4/137, 138). All of this is already known to Allah before it is even written down, but He makes known to the angels what is to happen, and commands them to do whatever they are enjoined to do. (Sharh Sahih Muslim li’l-Nawawi, 8/57).

Hadiths:

According to a Hadith narrated by Abdullah Ibn ‘Abbas (may Allah be pleased with them both), the Prophet (peace and blessings of Allah be upon him) said: “Seek it in the last ten days of Ramadan, when there are nine days left, and seven days left, and five days left.” (Narrated by al-Bukhari, 4/260).

The Prophet (peace and blessings of Allah be upon him) said: “Seek Laylat al-Qadr in the last ten days of Ramadan.” (Bukhari, 4/259)

Laylat al-Qadr is more likely to be in the last seven days.

Ibn ‘Umar (may Allah be pleased with him) reported that a man among the companions of the Prophet (peace and blessings of Allah be upon him) was shown Laytal al-Qadr in a dream, and that it was one of the last seven nights. The Messenger of Allah (peace and blessings of Allah be upon him) said: “It seems that your dreams agreed that it is one of the last seven nights, so whoever wants to seek it, let him seek it in the last seven nights.” (narrated by al-Bukhari, 1911; Muslim, 1165). Muslim reported: “Seek it in the last ten nights, and if any of you are weak or unable to do that, then let him not miss the last seven.”

 Peace and blessings be upon Muhammad