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

Having last month considered in gāthās the wisdom of the Buddha, we consider how all Buddhas employ expedients.

(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.

See The Opening of the Three Vehicles to Reveal the One Vehicle