sn.20.4 Saṁyutta Nikāya (Linked Discourses)

Rice Pots

At Sāvatthī.
“Mendicants, suppose one person was to give a gift of a hundred pots of rice in the morning, at midday, and in the evening. And someone else was to develop a heart of love, even just as long as it takes to pull a cow’s udder. The latter would be more fruitful.
So you should train like this:
‘We will develop the heart’s release by love. We’ll cultivate it, make it our vehicle and our basis, keep it up, consolidate it, and properly implement it.’
That’s how you should train.”