Thus I have heard:
One time, the Budha was staying at Anaathapindidas Ashrama in Jetavana of Shraavastii.
Then the Bhagavaan addressed the bhikshus:
“Receiving material gains is extremely difficult [to handle properly], preventing one from reaching the unconditioned (asamskrta) state.
The reason is, had that bhikshu Shrona not been greedy for material gains, he would not have committed such immeasurable killing, and upon the breakup of the body, after death, he would not have been reborn in hell.”
Then the Bhagavaan spoke these verses:
“Heavy are material gains received,
Destroying one’s pure conduct;
Therefore guard your mind—,
Not craving after pleasant tastes.
Though Shrona attained samadhi,
Even reached the heaven of the Thirty-three;
But then fell from his psychic powers,
And sank into slaughter’s karma.”
“O bhikshus, by this example, you should understand how difficult it is to receive material gains.
Thus should a bhikshu train himself: prevent the arising of thoughts of material gain not yet arisen, and abandon those already arisen.
Thus, bhikshus, should you train yourselves.”
When the bhikshus heard what the Budha said, they followed it with joy.