Yo ca mettaṃ bhāvayati
Appamāṇaṃ paṭissato
Tanū saṃyojanā honti,
Passato upadhikkhayaṃ.
For one who mindfully develops
Boundless loving-kindness
Seeing the destruction of clinging,
The fetters are worn away.
Itivuttaka 1.27
The Udāna and the Itivuttaka, trans. John D. Ireland