Day 3 covers the first half of Chapter 2, Expedients.

Having last month considered in gāthās how the Buddhas employ expedients, we consider that all Buddhas use expedients to teach the Dharma

(He said to Śāriputra again:)
I have already attained
The profound and wonderful Dharma,
The Dharma without āsravas, the inconceivable Dharma.
It is known only to me
And to the Buddhas of the worlds of the ten quarters.

Śāriputra, know this!
The Buddhas do not speak differently.
Have great power of faith
In the Dharma expounded by the Buddhas!
As a rule, the World-Honored Ones expound the true teaching
Only after a long period [of expounding expedient teachings].

(He said to the Śrāvakas
And to those who were seeking the vehicle of cause-knowers:)
I saved all living beings
From the bonds of suffering,
And caused them to attain Nirvāṇa.
I showed to them
The teaching of the Three Vehicles as an expedient
In order to save them from various attachments.

The great multitude at that time included Śrāvakas. [They also included] Ājñāta-Kauṇḍinya, and other Arhats, twelve hundred altogether, who had already eliminated āsravas. [They also included] the bhikṣus, bhikṣunīs, upāsakās, and upāsikās, [that is, the four kinds of devotees] who had already aspired for Śrāvakahood or Pratyekabuddhahood. All of them thought:

“Why does the World-Honored One extol so enthusiastically the power of the Buddhas to employ expedients? Why does he say that the Dharma attained by him is profound and difficult to understand, and that the true purpose of his teachings is too difficult for Śrāvakas and Pratyekabuddhas to know? He expounded to us the teaching of emancipation. We obtained this teaching and reached Nirvāṇa. We do not know why he says all this.”

See Faith is the Key