At Sāvatthi.
“Bhikkhus, have you heard the jackal howling during the early hours of the night, at the break of dawn?”
“Yes, venerable sir.”
“Bhikkhus, that jackal might possess some measure of |gratitude::thankfulness, appreciativeness [kataññutā]| or acknowledgement of what has been done for it. But some here, pretending to be followers of the |Sakyan son::an epithet of the Buddha as he went forth from the Sakyan clan [sakyaputtiyapaṭiñña]|, might not possess even a small measure of gratitude or acknowledgement for what has been done for them.
Therefore, bhikkhus, you should train yourselves thus: ‘We will be grateful and acknowledge what has been done for us; we will not be ungrateful and fail to acknowledge what has been done for us.’ Thus, bhikkhus, you should train yourselves.”