From the 6th chapter

When Lord Takanobu was at the Battle of Bungo, a messenger came from the enemy camp bearing sake and food. Takanobu wanted to partake of this quickly, but the men at his side stopped him, saying, "Presents from the enemy are likely to be poisoned. This is not something that a general should eat."
Takanobu heard them out and then said, "Even if it is poisoned, how much of an effect would that have on things? Call the messenger here!" He then broke open the barrel right in front of the messenger, drank three large cups of sake, offered the messenger one too, gave him a reply, and sent him back to his camp...Hagakure...