Expedition of Abu Bakr As-Siddiq
Encyclopedia
Expedition of Abu Bakr As-Siddiq to Nejd took place in July 628 AD,3rd Month 7AH, of the Islamic Calendar

Abu Bakr led a large platoon in Nejd on the order of Muhammad
Muhammad
Muhammad |ligature]] at U+FDF4 ;Arabic pronunciation varies regionally; the first vowel ranges from ~~; the second and the last vowel: ~~~. There are dialects which have no stress. In Egypt, it is pronounced not in religious contexts...

. Many were killed and taken as prisoner. The Sunni Hadith
Hadith
The term Hadīth is used to denote a saying or an act or tacit approval or criticism ascribed either validly or invalidly to the Islamic prophet Muhammad....

 collection, Sunan Abu Dawud mentions the event, where Abu Bakr was the leader of the expedition:
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