Freud refers to William Shakespeare's Timon of Athens, in which a nobelman is driven to despise all human society by his friends' betrayal. In Act IV Scene 3, Timon lavishes gold on two prostitutes, urging them with colourfully obscene language to resist redemption at all costs, spreading corruption and disease throughout the land:
That your activity may defeat and quell
The source of all erection. There's more gold:
Do you damn others, and let this damn you,
And ditches grave you all!
Online text of the play at 'MaximumEdge.com'