Tao-sheng: Something Beyond the Expected

Thereupon the men living the life of wisdom: Subhūti, Mahā-Kātyāyana, Mahā-Kāśyapa, and Mahā-Maudgalyāyana felt strange because they heard the Dharma from the Buddha that they had never heard before, and because they heard that the World-Honored One had assured Śāriputra of his future attainment of Anuttara-samyak-saṃbodhi.

As a departure from what was mentioned as three, now they have heard that they are [in reality none other than] the One, and then [have witnessed] [the Buddha’s] granting Body-son the prophecy [of his future enlightenment to] the unexcelled Tao. They heard these words directly pronounced by the Buddha, which they had never heard before. Thanks to this they realized it themselves. What they have attained is something beyond what they had expected; (naturally,] their happiness is double.

Tao-sheng Commentary on the Lotus Sutra, p224