Allah alone is the One who expands provision and determines it without anyone else. He is the One who expanded the provision for the people of Makkah and made it ample for them. They rejoiced in what He provided for them from this world with a joy of arrogance and heedlessness, not a joy of gratitude for Allah's favor and blessings upon them. They did not respond with thankfulness so that they might deserve the bliss of the Hereafter. They were unaware that the bliss of this world, in comparison to the bliss of the Hereafter, is nothing but a small thing enjoyed briefly, like the haste of a traveler, which is what he hastens to have of dates or a sip of barley water or something similar.