The insignificance of this World -

Jâbir ibn ’Abdullâh: The Messenger of Allâh sallallâhu ’alayhi wa sallam passed by the market place coming from the direction of ‘Âliyah and people were around him. He passed by a dead kid goat (i.e. a baby goat) which had very short ears. He held it by its ears and said: “Who amongst you would like to have this for a dirham?” They (the Companions) said: We would not want it even for less than that! What can we do with it? He said: “Do you wish to have it (for any price)?” They said: By Allâh, even if it were alive it (we would not want it), as it has very short ears, let alone now when it is also dead! The Messenger of Allâh sallallâhu ’alayhi wa sallam said: “By Allâh, this world is more insignificant to Allâh than this (goat) is to you all.” [23]

Sahl ibn Sa’d said that the Messenger of Allâh sallallâhu ’alayhi wa sallam said: “If this world was worth as much to Allâh as the wing of a mosquito, He would not have given a disbeliever even a sip of water.” [28]

Salmân said: Some people came to the Prophet sallallâhu ’alayhi wa sallam and he asked them: “Do you have food?” They said: Yes. He asked: “Do you have drink?” They said: Yes. He said: “Verily their outcome is like the outcome of this world, one of you stands behind his house holding his nose from their bad smell.” This is the similitude of this world. What is the eventual outcome of food and drink? They change to stool and urine. Therefore, a person hates the smell for himself. This is the similitude of the outcome of this World.

Ubayy ibn Ka’b said that the Messenger of Allâh sallallâhu ’alayhi wa sallam said: “Indeed the food of the son of Âdam is like the example of the world. Even if he puts spices and season into it, see what becomes of it.” [29]

source/references: https://abdurrahman.org/2014/01/27/righteous-action/