The meaning of this shloka is that the Brahma Jnana is attained by Vedas, House is made because of wife and external pleasure is obtained by wealth or money . Here is the complete shloka:
Dhanam arjatu kaakutsa
dhanam moolam idam jagat;
antaram naiva janami
nir dhanyasa mruthyasacha
Dhanam arjatu kaakutsa
dhanam moolam idam jagat;
antaram naiva janami
nir dhanyasa mruthyasacha