question #3 Sahih Muslim 1049, Book 12, Hadith 155 : What is the significance of the statement that the son of Adam is only satisfied with dust?

If there were for the son of Adam a valley full of riches, he would long to possess another one like it. and Ibn Adam does not feel satiated but with dust. And Allah returns to him who returns (to Him). Ibn Abbas said: I do not know whether it is from the Qur’an or not; and in the narration transmitted by Zuhair it was said: I do not know whether it is from the Qur’an, and he made no mention of Ibn Abbas.