It is narrated from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "The Mahdi will be from us, the people of the household. He will have a high-bridged nose and a broad forehead. He will fill the earth with justice and fairness just as it had been filled with tyranny and oppression. He will live this many years." And he (peace and blessings be upon him) spread out his left hand and extended two fingers of his right hand (the index finger and the thumb) and folded three fingers (that is, he indicated seven years). This hadith is sahih (authentic) on the condition of Imam Muslim, but the two Shaykhs (Bukhari and Muslim) did not record it.

It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that she said: I heard the Prophet (peace and blessings be upon him) mention the Mahdi, and he (peace and blessings be upon him) said: "Yes, he (the Mahdi) is true, and he will be from the descendants of Fatimah (may Allah be pleased with her)."

It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) mentioned the Mahdi and said: "He will be from the descendants of Fatimah (may Allah be pleased with her)."

It is narrated from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "The Mahdi will emerge in the last era of my Ummah. Allah Almighty will provide him with water (through rain), the earth will bring forth its vegetation, he will distribute wealth properly (equally), livestock will be abundant and the Ummah will become great. He will remain for seven or eight years (hajj seasons)." This hadith has a sahih (authentic) chain, but the two Shaykhs (Bukhari and Muslim) did not record it.

It is narrated from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "The earth will be filled with oppression and tyranny. Then a man from my family ('itrah, the household) will emerge who will rule for seven or nine (years). He will fill the earth with justice and fairness just as it had been filled with oppression and tyranny." This hadith is sahih (authentic) on the condition of Imam Muslim, but the two Shaykhs (Bukhari and Muslim) did not record it.