Expedition of Ali ibn Abi Talib may Allah be pleased with him to Yemen in Ramadan of Year 10 after the Hijrah (10 AH), and the conversion of Hamdan at his hands in one day
Ali ibn Abi Talib may Allah be pleased with him went on an expedition to Yemen in Ramadan of this year, and as a result, the tribe of Hamdan accepted Islam at his hands in one day.

Ali ibn Abi Talib may Allah be pleased with him went on an expedition to Yemen in Ramadan of this year, and as a result, the tribe of Hamdan accepted Islam at his hands in one day.
It represents the extension of the call to Islam into the regions of Yemen in the later period of the Prophetic biography.
In Ramadan of this year, there was the expedition of Ali ibn Abi Talib - may Allah be pleased with him - to Yemen, and all of Hamdan accepted Islam at his hands in one day.
What this means is that the Prophet ﷺ sent Ali may Allah be pleased with him on a mission to Yemen. He invited the people there to Islam, and the people of Hamdan responded to him all in one day.
Calling people in Yemen to Islam and conveying the Message to them.
Hamdan entered Islam as one group.
Shows the spread of Islam in Yemen in the late Prophetic period
Shows the impact of sincere individual da'wah in guiding a large group
The Islam of an entire tribe changes its religious and social structure
Teaches confidence in the effect of a righteous caller to Islam
It represents the spread of Islam across the Arabian Peninsula
Strengthening Islam in Yemen through the call to Islam, not fighting
Commander of the expedition and caller to Islam
The tribe that accepted Islam at his hands
Guidance is in Allah's hands, and He brings it about through the callers
Truthfulness and steadfastness in delivering the message
The call to Islam can bring people together on one foundation
The importance of preparing callers who can influence others
Sending organized da'wah expeditions
Islam moving into new communities
The weak reach of the Message to some communities
Wise da'wah can influence whole groups
The importance of choosing the right caller for the right place
Strengthening da'wah outreach to the outskirts and distant areas
To be a cause of guidance for others
It is limited to the da'wah meaning, without unsupported conclusions
The prophetic context was by revelation and direct prophetic guidance
Choosing a qualified caller may lead to collective guidance