The Great Power in Tactful Means

The World-honored One was silent and did not stop [the 5,000 who left]. This was because he thought that even if he forced them to remain, they could not understand his teaching and it would tend instead to produce an adverse result. He also considered that they would wish to seek a true teaching sometime in the future and would in time develop the capacity to understand it. His preaching to them at that time would be the quickest way to save them.

At first glance this attitude of the Buddha seems to indicate indifference to others, but his mind in its profundity was filled with the great wisdom and benevolence of the Buddha. This is clear from the incident recounted in chapter 8, “The Five Hundred Disciples Receive the Prediction of Their Destiny.” When he gave a great many arhats the prediction that they would become buddhas in accordance with their practice, he said to Kāśyapa, “The other band of śrāvakas will also be like them. To those who are not in this assembly, do you proclaim my words.” The Buddha’s words “those who are not in this assembly” refer to the five thousand monks who had risen from their seats and left the assembly earlier. The fact that he purposely did not stop them at that time demonstrates his great power in tactful means.

Buddhism for Today, p45