What is special about this night:
It was reported that the prophet peace be upon him said: “Whoever stays up during Laylatul Qadr out of faith and in the hope of earning the reward of Allah, all his previous sins will be forgiven.” [Al-Bukhari and Muslim].
“Ha, Meem. By the clear Book. Indeed, We sent it down during a blessed night. Indeed, We were to warn [mankind]. On that night is made distinct every precise matter – [Every] matter [proceeding] from Us. Indeed, We were to send [a messenger]. As mercy from your Lord. Indeed, He is the Hearing, the Knowing.”[Quran 44:1-6]
Allah also says in the Qur’an: “The Night of Decree is better than a thousand months. The angels and the Spirit descend therein by permission of their Lord for every matter. Peace it is until the emergence of dawn.” [97:3-5]
When is Laylatul Qadr:
The Prophet peace be upon him also said: “Seek Laylat Al-Qadr in the odd-numbered nights of the last ten nights.” [Al-Bukhari]
What should we say in it:
Aishah (May Allah be pleased with her) reported:I asked: “O Messenger of Allah! If I realize Laylat Al Qadr (Night of Decree), what should I supplicate in it?” He replied, “You should supplicate: Allahumma innaka ‘afuwwun, tuhibbul-‘afwa, fa’fu ‘anni (O Allah, You are Most Forgiving, and You love forgiveness; so forgive me).”