Once on a time when Brahmadatta was reigning in Benares, the Bodhisatta was Treasurer of that city. And then too did the same gang of tipplers, conspiring together in like manner, drug liquor, and go forth to meet him in just the same way, and made just the same overtures. The Treasurer did not want to drink at all, but nevertheless went with them, solely to expose them. Marking their proceedings and detecting their scheme, he was anxious to scare them away and so represented that it would be a gross thing for him to drink spirits just before going to the king's palace. "Sit you here," said he, "till I've seen the king and am on my way back; then I'll think about it."
On his return, the rascals called to him, but the Treasurer, fixing his eye on the drugged bowls, confounded them by saying, "I like not your ways. Here stand the bowls as full now as when I left you; loudly as you vaunt the praises of the liquor, yet not a drop passes your own lips. Why, if it had been good liquor, you'd have taken your own share as well. This liquor is drugged!" And he repeated this stanza:-
What? Leave untasted drink you vaunt so rare?
Nay, this is proof no honest liquor's there. 
After a life of good deeds, the Bodhisatta passed away to fare according to his deaerts.