"Among the nights of Ramadan is one special night, which is better than a thousand months (HQ, 97:3). Good deeds performed on that single night are equal to those performed over a thousand months. It is the Night of Power (Lailatul Qadr), when the Qur'an was revealed. Some commentators believe it was the night when the Qur'an was brought down from Baytul M`amur (Heavenly abode), for Jibrael to reveal in parts to the Prophet (s). Others say it was the night when the Prophet received the entire Qur'an, but was asked to transmit it as and when the occasion demanded.
Lailatul Qadr is a celebration to commemorate the arrival of the final guidance for humans. It is a tribute to the commencement of the message revealed to mankind by their Creator, a message which shows them the way to achieve happiness in both the worlds. Just as the arrival of a child is celebrated, on its birth and then every year, as a bringer of joy and fulfilment for the family, Lailatul Qadr is celebrated as a bringer of light and guidance for mankind. Unlike the birthday which is celebrated with a feast for the senses, Lailatul Qadr includes a feast for the spirit, a feast of worship and prayers.
Some hadith indicate that the fate of every believer for the coming year is decreed on this night. That is why the Du`as for this night ask for special favours in the decree for the year. Believers are encouraged to stay awake the entire night, and pray for blessings and forgiveness. It is the holiest night of the year, and it would be unwise to be heedless of the tremendous benefits of this night."