Dia dá mhaoin is mairg do·ní.

Dia dá mhaoin is mairg do·ní.

(god * of his * wealth * is * woeful * makes)

Woe to him who makes a god of his wealth.

This is the first line of the second stanza of the poem "Do·ní duine dia dá mhaoin" by Donnchadh Mór Ó Dálaigh (1175 - 1244).