It is reported from Ka’b Al-Ahbâr – Allâh have mercy on him – that he said:

Allâh chose from the months the month of Ramadân, from all the lands He chose Makkah, from the nights He chose Laylatu Al-Qadr (The Night of Decree), and chose the times for prayers; so a believer is always between two good deeds: one he has done and the other he is waiting to do.

Abû Nu’aym, Hilyah Al-Awliyâ` Vol.2 p458.