Day 14 covers all of Chapter 9, The Assurance of Future Buddhahood of the Śrāvakas Who Have Something More to Learn and the Śrāvakas Who Have Nothing More to Learn, and opens Chapter 10, The Teacher of the Dharma.

Having last month heard Ānanda’s reaction to his prediction of Buddhahood, we come to Rāhula’s future.

Thereupon the Buddha said to Rāhula:

“In your future life you will become a Buddha called Walking-On-Flowers-Of-SevenTreasures, the Tathāgata, the Deserver of Offerings, the Perfectly Enlightened One, the Man of Wisdom and Practice, the Well-Gone, the Knower of the World, the Unsurpassed Man, the Controller of Men, the Teacher of Gods and Men, the Buddha, the World-Honored One. [Before you become that Buddha,] you will make offerings to as many Buddhas, as many Tathāgatas, as the particles of dust of ten worlds. [Before you become that Buddha,] you will become the eldest son of those Buddhas just as you are now mine.

“The adornments of the world of Walking-On-Flowers-Of­-Seven-Treasures Buddha, the number of the kalpas for which that Buddha will live, the number of his disciples, the duration of the preservation of his right teachings, and the duration of the preservation of the counterfeit of his right teachings will be the same as in the case of Mountain-Sea-Wisdom-Supernatural-Power­King Tathāgata.

“After you become the eldest son of the [Mountain-Sea-Wisdom-Supernatural-Power-King] Buddha, you will attain Anuttara-samyak-saṃbodhi [, and become Walking-On-Flowers-Of-Seven­Treasures Buddha].”

Thereupon the World-Honored One, wishing to repeat what he had said, sang in gāthās:

When I was a crown prince,
Rāhula was my eldest son.
When I attained the enlightenment of the Buddha,
He received the Dharma, and became the son of the Dharma.

In his future life he will see
Many hundreds of millions of Buddhas,
Become the eldest son of those Buddhas, and seek
The enlightenment of the Buddha with all his heart.

Only I know his secret practices.
He shows himself
To all living beings
In the form of my eldest son.

He has many thousands of billions of merits.
His merits are countless.
He dwells peacefully in the Dharma of the Buddha,
And seeks unsurpassed enlightenment.

Rev. Ryusho Jeffus‘ Lecture on the Lotus Sutra offers this about Rāhula:

It is the ordinary day-to-day practice that each of us performs that is actually the great secret practice of Rahula. It isn’t fame or acquiring a big name that is required to attain enlightenment. It isn’t being famous that will lead others to practice the Lotus Sutra. It is our practice of the Lotus Sutra in our everyday lives that will enable countless others just like us to ultimately take faith in the Lotus Sutra. We should not be discouraged, instead we can look at Rahula who will become Walking-On-Flowers-Of-Seven-Treasures Buddha and we too can walk on the flowers of the seven treasures of Myoho-Renge-Kyo.Lecture on the Lotus Sutra