Śatapatha Brāhmaṇa ("of a hundred paths") 10.5.2.17

10.5.2.17

tasmādevaṃvitsvapyāt lokyaṃ haite eva taddevate mithunena priyeṇa dhāmnā samardhayati tasmādu ha svapantaṃ dhureva na bodhayennedete devate mithunobhavantyau hinasānīti tasmādu haitatsuṣupuṣaḥ śleṣmaṇamiva mukham bhavatyete eva taddevate retaḥ siñcatastasmādretasa idaṃ sarvaṃ sambhavati yadidaṃ kiṃ ca

As to this they say, 'Is Death near or far away?' Let him say, 'Both near and far away;' for inasmuch as he is here on earth in the body he is near, and inasmuch as he is that one in yonder world he also is far away.