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Imām Adh-Dhahabi (died 748 AH, rahimahullāh) stated:
“It is compulsory upon every Muslim to seek
nearness to Allāh, the Most High, by way of every means he is able to muster.
He must exert himself in fulfilling the commands and the acts of obedience to
Allah. And after the affair of fulfilling the commands and keeping away from
the forbidden matters, the most beneficial means and most successful path of
nearness to Allah for a person is to maintain good health and treat his
illnesses. That is because good health is something that one seeks in the
legislated supplications and acts of worship.”
Taken from: https://abukhadeejah.com