One should know that Allah, the Almighty, has the full right to prescribe and assign any time for the revelation of His mercy upon His faithful servants. In this way, Allah (Glorified be He) assigned Friday, the Night of Divine Decree and other times when Du`a’ (invocation) is to be answerable.

The Hajj comes during the sacred months of the lunar calendar in which many blessings and sorts of mercy are being showered on the believers everywhere all over the globe. Thus, the possibility of obtaining these blessings and favors in Hajj during these months is duplicated. Indeed, Allah has never prescribed any hardship for His faithful believers. On the contrary, He made all and everything of great benefit for them. 

Ifrad, Qiran, Tamattu` Restrictions of Ihram An Interrupted Hajj For Medical Reason Short History of the Ka`bah Ar-Ramal: Walking Briskly in Dignity So That Our Hajj May Be Accepted The Rebuilding of the Ka`bah Experience of Hajj and Umrah Entering the Sacred Mosque Zamzam Water - A Miracle Hajj Requirements and Regulations