What line from the Discworld books did Neil Gaiman put into Sandman?

Question

I saw this in an interview (about Good Omens) that Neil Gaiman posted on his tumblr.

TP: “In fact, people that have read a lot of the ‘Discworld’ books and a lot of the ‘Sandman’ comics will actually find, for example, Neil put into one of the ‘Sandman’ comics a phrase lifted out of a ‘Discworld’ book. I spotted it in a shop and said, ‘You bastard! You pinched my sentence. Everyone liked that line, and you pinched it.’”

I have read some Sandman, and pretty much most of the Discworld books. Short of going back and rereading everything (not an arduous task, but time-consuming!), does anyone know how I would find the line referred to?

Or does anyone know the line? I realise it's a bit lazy to just straight out ask, and there is a kind of pleasure in finding these things yourself, but if someone could narrow it down to the two books, that would be lovely.

Answer 1

This blog post says the original line, in Pratchett's Mort, is

He remembered being summoned into reluctant existence at the moment the first creature lived, in the certain knowledge he would outlive life until the last being in the universe passed to its reward, when it would then be his job, figuratively speaking, to put the chairs on the tables and turn all the lights off.

Gaiman's version (from "Façade," collected in The Sandman: Dream Country) is

"When the first living thing existed, I was there, waiting. When the last living thing dies, my job will be finished. I’ll put the chairs on the tables, turn out the lights and lock the universe behind me when I leave."

My bookses are in boxes, so I can't verify the quotes myself. :(