The Relationship Between the Length of Life and Righteous Deeds

Question:
You also ask whether a person's lifespan increases and decreases, even though a person's lifespan is written for him in his mother's womb at forty nights, as mentioned in the hadith of the Messenger of Allah (peace and blessings be upon him). There is no contradiction between the statement that his lifespan is written and the fact that it increases for certain reasons and decreases for certain reasons.

Answer:
Because these causes are also written in his lifespan. So Allah has written that this person's lifespan will increase due to such and such, or his lifespan will decrease due to such and such. So it is all in the divine decree and destiny of Allah.
Some of the scholars say that the meaning of the lengthening and shortening of life by causes is that the blessing settles in the lifespan. With good causes, obedience, and maintaining family ties, his life is lengthened in the sense that he is blessed in it with righteous deeds. And there are causes for the shortening of life, meaning the reduction of blessing and the reduction of righteous deeds in this lifespan, until it becomes a lifespan with no blessing in it, and it is a short lifespan for this reason. Allah knows best. The important thing is that lifespans are in the hand of Allah (Glorified and Exalted is He), and that destinies are in the hand of Allah. We believe in the divine decree and destiny, and we believe in the causes that Allah has made causes for the increase or decrease of life. Yes.