It is narrated concerning Sayyiduna Malik bin Sinan (may Allah be pleased with him), the father of Sayyiduna Abu Sa'id (al-Khudri) (may Allah be pleased with him), that when the Messenger of Allah (peace and blessings be upon him) was wounded in his blessed face on the day of Uhud, he sucked the blood of the Messenger of Allah (peace and blessings be upon him) and swallowed it. It was said to him: "Are you drinking blood?" He said: "Yes, I am drinking the blood of the Messenger of Allah (peace and blessings be upon him)." So the Messenger of Allah (peace and blessings be upon him) said: "My blood has mixed with his blood; the Fire will not touch him."
Imam al-Tabarani (may Allah have mercy on him) said: "This hadith is narrated from Abu Sa'id (may Allah be pleased with him) only with this chain; Ibrahim bin al-Mundhir is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 9098
Hadith Gradingمحدثین:لم يُر في إسناده من أجمع على ضعفه
Hadith Takhrij«قال الهيثمي: لم أر في إسناده من أجمع على ضعفه «مجمع الزوائد ومنبع الفوائد، ج 8، ص 270»» «أخرجه الحاكم فى «المستدرك» برقم: 6447، 6455، والطبراني فى «الكبير» برقم: 5430»