Saṃyutta Nikāya
Saḷāyatanavaggo
Saḷāyatanasaṃyuttaṃ
Gilānavaggo
Lokapañhāsuttaṃ
OK, then a certain almsman approached there where the exalted one was. Having approached the exalted one they greeted together. Having exchanged the cordial howdy greet he sat down at one end. OK, at one end seated he, the almsman, said this to the exalted one:
'The world, the world, venerable, it is called. OK now in what respect, venerable, is it called 'world'?'
'OK, it is open to "we're old", almsman, from that it is called 'world'.
And what is open to "we're old"?
OK, sight, almsmen, is open to "we're old", forms are open to "we're old", cognition by sight is open to "we're old". Touch with sight is open to "we're old". Also this what with support of touch with sight arises, the felt or happiness or suffering or neither happiness nor suffering, that also is open to "we're old".
Hearing... Smell ... Taste ... Body ... Intellect ...
OK, open to "we're old", almsman, from that it is called 'world'.'