Allah [SwT] holds the promise that burden on soul equals bearing capacity, in other words burden is proportional to bearing capacity:

‘’On no soul doth Allah place a burden greater than it can bear. It gets every good that it earns, and it suffers every ill that it earns. (Pray) ‘’Our Lord! Condemn us not if we forget and fall in error; Our Lord! Lay not on us a burden like that which didst lay on those before us, Our........

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