長阿含經 30.p171

30.p171

“The people of that land don’t have romantic attachments, nor do they accumulate things. Their life spans are always an exact length, and they’re born in heaven when they die. Why are their life spans always exactly the same? Those people cultivated the ten good actions in previous lives and were born in Uttarakuru after their bodies broke up and their lives ended. They live for a thousand years, no more or less. This is why those people have life spans that are an exact length.