Superiority of supplication at night
72) Narrated AbO Huraira that Allah's Messenger said: In the last third of every night our Lord descends to the lowermost heaven and says: Who is calling Me, so that I may answer him? Who is asking Me, so that I may grant him? Who is seeking forgiveness from Me, so that I may forgive him.
(This Haditn is sound and reported in Musnad of AbO
Late at night when people get much busy with worldly pleasures, Allah gives the believers an opportunity, or say, an answer hour if they can fight sleep and invoke Allah for whatever they need. In another Hadith in this book, Allah is said to descend to the lowest heaven saying: Who asks My forgivenss so that I forgive him, and who wants something so that I grant it to him.