The Promised Massih Hadhrat Ahmad (as) writes:
“Allah gives glad tidings to the faithful in Surah Al Qadr that His prophet and His revelation descended from the heaven during the period of Laila-tul- Qadr (the Night of Decree).
Every Muhaddath and Mujaddid who is commissioned by Allah always appears during the Night of Decree.
Do you understand what is meant by the Night of Decree? The Night of Decree or the Laila-tul- Qadr is the name of a night when spiritual darkness reaches its ultimate gloom. That gloom, metaphorically, demands a light from heaven for its dissipation. This night is symbolically called the Night of Decree. In fact, it is not a night, but a period, which is referred to as a ‘night’ because of its intense darkness.
One thousand months is the approximate life span of a human being. It is also a period after which normal human senses ceases to function. The elapse of a period of one thousand months, following the demise of a Prophet or his spiritual successor also signals the commencement of a ‘night’ of darkness. This ‘night’ triggers fervour in the heavens and the seeds of the birth of one or more reformers (Mujaddidin) is stealthily sown. Thus such a Mujaddid or prepare to emerge at the head of the new century. The following verse is also an indication by Allah towards this phenomenon:
“The Night of Decree is better than a thousand months”. (Surah Al Qadr, 97:4) .
It means that anyone who perceives the blessings of this Night of Decree, or anyone who benefits from the company of the Mujaddid of the age, is better than an eighty year old man who failed to behold this blessed time. Even if he witnessed a single moment of this blessed era, it was better than his past one thousand months. Why is that moment better?
Now, O Muslims, Ponder over these verses and observe how Allah praises that blessed period in which, at the need of the hour, a Mujaddid is sent unto the world. Would you not acknowledge the value of this period? Would you view with ridicule and taunt the covenants of Allah, the Most High?” [Victory of Islam, pp. 33-35, Qadian: Islam International Publications, (2003) ]