It was
narrated from Abu Hurairah that the Messenger of Allah (ﷺ)
said:
“Our Lord, the Blessed and Exalted, descends when one third of
the
night remains, every night and He says: ‘Who will ask of Me, that
I
may give him? Who will call upon Me, that I may answer him? Who will
ask My forgiveness, that I may forgive him?’ until dawn comes.”
Hence
they used to prefer voluntary prayers at the end of the night
rather
than at the beginning.