The Sahabah Rush to the Prophet, and Abu Ubaydah's Sacrifice

Shaykh Yasir Qadhi explains:

As the false rumor of the Prophet's (ﷺ) death spread, small groups of Ṣaḥābah began searching desperately for him. The first to recognize him, hidden behind a helmet and armor, was Kaʿb ibn Mālik, who identified the Prophet (ﷺ) simply by the piercing brightness of his eyes. Overcome with joy, he shouted: "O Muslims, rejoice, the Prophet (ﷺ) is alive!" The Prophet (ﷺ) told him to be silent, announcing his location loudly was not the wisest move, but Kaʿb's emotions overtook him. He rushed to the Prophet (ﷺ) and gave him his own armor, likely because the Prophet's armor had lost its functionality, or so that people would no longer recognize the Prophet (ﷺ) by his distinctive battle garment. Left without armor himself, Kaʿb sustained over twenty wounds by the end of the battle.

News that the Prophet (ﷺ) was alive spread rapidly, and the Ṣaḥābah rushed to join him, among the first were Abū Bakr, ʿUmar, ʿAlī, and al-Zubayr ibn al-ʿAwwām. Abū Bakr later told ʿĀʾishah: "When the people rushed up to the Prophet (ﷺ), I saw one man protecting him, fighting off anyone else who approached. I said: 'O Allah, let it be Ṭalḥah.'" It was indeed Ṭalḥah. As Abū Bakr ran, another man overtook him entirely out of eagerness and joy, Abū ʿUbaydah ʿĀmir ibn al-Jarrāḥ, moving so fast Abū Bakr described him as dancing up the mountainside like a gazelle.

When they reached the Prophet (ﷺ), they found (in this version of the report) two wounds embedded in his cheeks, one having dislodged a tooth, the other lodged deep in the flesh. Abū Bakr moved to remove them, but Abū ʿUbaydah begged repeatedly to be allowed to do it himself, until the gentle-natured Abū Bakr yielded. Since pulling the embedded pieces out by hand risked further tearing the Prophet's face, Abū ʿUbaydah instead bit down on the first wound with his own teeth and worked it free, breaking one of his own teeth to spare the Prophet (ﷺ) further pain. Abū Bakr then insisted it was his turn for the second wound, but Abū ʿUbaydah again refused and repeated the same act on the other cheek, breaking a second tooth. Abū ʿUbaydah remained missing at least two, possibly more, teeth for the rest of his life as a result.