Why might the quote, bhagavad gita 2: 13 "as the embodied soul continuously passes, in this body, from boyhood to youth to old age, the soul similarly passes into another body at death. a self-realized soul is not bewildered by such a change" be used in hindu cremation?

can you give more details

for many centuries there were important factors which the economies of the muslim empires developed increasingly. they applied economic procedures in production, investment, finance, taxation and property. they used to tax certain goods (for example: harvest), they charged interest on money lent, they signed contracts with merchants; they relied on a common currency, and they used checks as well as promissory notes. with the money collected by means of taxation, the government provided the needy with an income. in addition, trading networks covered huge distances, so far regions started to have contact and exchange goods. this trade network covered areas of asia, africa and europe.