Allāh’s statement: ‘There is not a thing whose storehouses are not with Us’ (Q 15: 21) contains a treasure; that is, nothing is sought except from someone who owns the storehouses, and the keys to these storehouses are in His Hands. Seeking the storehouses from other than Him is akin to seeking something which they do not possess nor are they able to [gain hold of it].
And His statement: ‘…that the final goal is your Lord…’ (Q 53: 42) contains a magnificent treasure; that is, anything that is desired for other than His sake and is not linked to Him will only disconnect and vanish. This is because that thing is not the ‘final goal’, rather the ‘final goal’ is where all matters end – they end at His creation, His Will, His Wisdom, and His Knowledge; thus He is the goal of every sought thing. Moreover, every loved thing that is not loved for His sake will become pain and anguish for that person, every action that is not desired for His sake will become lost and futile, and every heart that is not connected to Him will become wretched, deprived of [the blessings of] His happiness and success.
Whatever one wants from Him can all be found in His statement: ‘There is not a thing whose storehouses are not with Us’, while whatever one wants for Allah can all be found in His statement: ‘…that the final goal is your Lord…’, thus there is none other than Him in seeking a goal, nor anything besides Him that is the final goal.
Source: Ibn al-Qayyim, Fawāʾid al-Fawāʾid: Murattabatan Mubawwabatan, edited by Sh. ʿAlī b. Ḥasan al-Ḥalabi.