The Prophet (Peace and Blessings be Upon Him) said:
“Let all of you spend the night of Sha`ban the 15th in worship and its day in fasting. Allah descends to the nearest heaven with His mercy during this night, beginning at sunset, and says:
‘Is there no one asking forgiveness that I may forgive them?
‘Is there no one asking sustenance that I may grant them sustenance?
‘Is there no one under trial that I may relieve them?’
This continues in the same way until dawn rises.”
(Ibn Majah, Ikama, 191)