At Sāvatthi.

"Bhikkhus, if someone were to give a donation of a hundred pots [of food] in the morning, a hundred pots of food at noon, and a hundred pots of food in the evening, and if someone else were to cultivate a mind of loving-kindness even for the brief moment it takes to milk a cow, whether in the morning, at noon, or in the evening — this [cultivation of loving-kindness] would yield far greater fruit than those givings.

Therefore, bhikkhus, you should train yourselves thus: 'Our release of mind through loving-kindness will be developed, practiced often, made a vehicle, made a basis, firmly established, nurtured, and resolutely undertaken.' Thus, bhikkhus, you should train yourselves."