Bhagavatapurana 8.19.41

8.19.41

parāg riktamapūrṇaṃ vā akṣaraṃ yat tadomiti /
yat kiñcidomiti brūyāt tena ricyeta vai pumān /
bhikṣave sarvamoṃ kurvan nālaṃ kāmena cātmane //

41. There is a Vedic text beginning with Parak va etc, the meaning thereof is, ‘by whatever a person agrees to give to an applicant he becomes poorer; by agreeing to give everything to him the donor cannot find sufficient for himself.’