In the science of nature, natural bodies remain in the two worlds for an infinite period of time, but rather they continue to exist, and that people only knew about nature as much as the Truth had informed them of that, from what appeared to them in the durations of the movements of the seven spheres and planets, and for this reason they made the natural age one hundred and twenty years, which This ruling requires it, so if a person exceeds this period, he falls into the unknown age, even if he is of nature and does not deviate from it, but it is not within the power of his knowledge to limit it to a specific time. Just as he increases the natural age by a year or more, it is permissible for him to increase thousands of years more than that, and it is permissible.