The first time the Messenger of Allah ﷺ went out with the people to the prayer ground for the Eid prayer in Year 2 after the Hijrah
The Messenger of Allah ﷺ went out to the prayer ground and led the people in the Eid prayer. That was the first time he went out with the people to the prayer ground for the Eid prayer.

The Messenger of Allah ﷺ went out to the prayer ground and led the people in the Eid prayer. That was the first time he went out with the people to the prayer ground for the Eid prayer.
It falls within the building of communal rites for the Muslim community in Madinah after the Hijrah.
And in this year: the Messenger of Allah ﷺ went out to the prayer ground and led them in the Eid prayer, and that was the first time he went out with the people to the prayer ground for the Eid prayer.
What is meant is that the Prophet ﷺ prayed the Eid prayer with the Muslims outside the mosque, at the prayer ground, and this was the first time he went out with the people to the prayer ground to perform the Eid prayer.
It was mentioned that this was in Year 2 after the Hijrah, and Ar-Raheeq Al-Makhtum mentions that the first Eid the Muslims celebrated was in Shawwal of 2 AH.
To show the Eid rite collectively for the Muslims in the early stage of their practice of it.
Muslims now made a collective outing to the prayer ground for the Eid prayer in this year.
The first recorded outing with the people to the prayer ground for Eid prayer
Showing the Eid rite and teaching it in practice
Gathering the Muslims for one prayer in one place
Teaching the ummah the form of Eid in practice
Establishing a communal feature of Islamic society
Strengthening the regular observance of public rites in Madinah
Went out to the prayer ground and led the people in the Eid prayer
They prayed the Eid prayer behind the Prophet ﷺ
Thanking Allah by establishing the Eid prayer
Gathering in obedience and lawful joy
The unity of Muslims in a public rite
The Muslim community in Madinah appearing in an organized form
Teaching the people the Sunnah through practical action
Organizing communal rites in a designated place
Building a collective identity for the Muslim community
Weak attendance of communal rites or lack of organization
Reviving public rites in a communal, organized way
The importance of organizing Eid prayer and making it visible to the people
Supporting organized religious gatherings on the Eids
Taking the initiative to attend communal rites
It is limited to what is established about going out to the prayer ground and the Eid prayer
The Prophetic context was foundational and a first-time occurrence, while the modern one is an extension of an established practice
Public rituals are held in their proper, shared places while preserving their dignity.