It is narrated from Sayyidah Umm Habibah (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) said: "I was shown what my Ummah will face after me: some of them shedding the blood of others. So I asked Allah to grant me the right of intercession for them on the Day of Resurrection, and Allah did so."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19713