The Promised Messiah(as) said:
Through his perfect teachings he will completely remove their spiritual destitution and inner penury and shall present them with treasures of erudition, truths and knowledge.
That is to say, these are the treasures and he shall elucidate spiritual knowledge to them.
He then said:
So much so that people will get tired of receiving this wealth and no seeker of truth from among them will remain spiritually poor and indigent. All those who hunger and thirst for truth will be provided in abundance with the wholesome food of truth and the sweet drink of wisdom.
That is to say the pure diet of Truth will be given to them, the real teachings of Islam will be given to them only through the Promised Messiah(as) and the nectar of spiritual knowledge will be given to them. If these people were drinkers of the beverage of spiritual knowledge, they would not have reacted in the destructive, let alone unproductive way that has been demonstrated by them. Rather, they would have displayed a productive response and would have turned to God.
The Promised Messiah(as) states:
... and their pouches will be filled with the pearls of true knowledge.
The real knowledge of Islam is a precious treasure, it is like pearls, he will fill their pouches with it.
They will be given a phial filled with the perfume of the true meaning of the Holy Qur’an.
They will receive the perfume of the Holy Qur’an.