Hadhrat Abu Sa*eed (Radhiyallaho anho) narrates that Rasulullah (Sallallaho alaihe wasallam) said: "Almighty Allah says; "If anybody finds no time for My remembrance and for begging favours of Me, because of his remaining busy with the Holy Qur'an, I shall give him more than what I give to all those who beg favours of Me. The superiority of the Word of Allah over all other words is like the superiority of Allah over the entire creation."

In other words, compared to those who are begging favours of Allah, He will surely confer some better reward on a person who remains so occupied with committing the Qur'an to memory or learning and understanding it that he hardly gets time for du'a (prayer).

It is commonly known that when a man distributes sweets, or something else amongst others, a share is set aside for the person who cannot attend the function because of the task of distribution given to him by the distributor himself.
In another hadith, in the same context, it is mentioned that Allah would give such a person a better reward than what He would give to His ever grateful servants.