The Bodhisatta was once a royal treasurer. One day as he walked to the palace, some men invited him to sit with them and drink some rare liquor. The Bodhisatta did not drink alcohol, but he knew an invitation like this could be a ruse; and if so, he wanted to expose it. So he agreed to join them. But, he said, he could not drink before going to the king’s palace, so they should wait for him and he would think about joining them when he returned. After his business was finished he saw the men again and their bowls were still full. If it was actually good liquor they would have drank some already. He told them he knew they were robbers and that they had drugged the liquor.
In the Lifetime of the Buddha
One day some men who had no money decided to rob Anathapindika, a wealthy supporter of the Buddha. Knowing that he wore his rings and richest attire when he went to see the king, they set up a table along his regular route to the palace and invited him to sit down and drink some rare liquor. Anathapindika did not drink, but he knew this was likely to be a ruse and agreed so that he could expose them. After sitting for a while and seeing that the men did not drink any of their liquor, he was certain it was drugged. He told them he knew what they were up to and challenged the men to take the first swig. The robbers got up and fled.
When Anathapindika told the Buddha about this incident, the Buddha told him this story so he knew that during earlier births these same men had tried to do the same thing to him.