Abu Dawoud in his ‘Sahih’ on Page 87, Vol. 4 narrated from Abdulla a tradition from the Holy Prophet (S.A.W.A.) as follows: “If there remains not more than a day from the life of the earth, God Almighty will set the day so long until He appoints a person from my progeny.”
Thereafter he says-Similarly it has come in Hadith Sufyan that the Holy Prophet has said: “The life of this world shall not end until an Arab from my progeny will rule over the world.”
The same book on the afore-said page and volume mentions a tradition from All (A.S.) who narrates from the Holy Prophet (S.A.W.A.) as follows: “If there remains not more than a day from the life of the earth, surely God shall appoint a person from my progeny.”
Tirmidhi in Vol. 2 of his ‘Sahih’ on Page 270 narrates a tradition from Abdullah who narrates from the Holy Prophet (S.A.W.A.) that he said: “The life of this world shall not cease to exist until an Arab from my progeny shall come and rule.”
Tirmidhi says: This tradition is (acceptable) and (correct) and the same has also been narrated from Ali, Abu Sa’eed, Umm-Salma and Abu Huraira.
Also, in the afore-said book on the same page of the same volume, a tradition has been narrated by Abu Hurair from the Holy Prophet (S.A.W.A.) as follows:
“If there remains not more than a day from the life of the earth, God Almighty will set the day so long until a person from my progeny shall come and rule.”
Then he says: This ‘hadith’ is (acceptable) and (correct).
Ibn-Hajar in his “Sawa’eq” on Page 97 says: Abu Ahmad, Abu Dawoud, Tirmidhi and Ibn Maaja have narrated from the Holy Prophet (SA.W.A.) as saying:
“If there remains not more than a day from the life of the earth, surely God shall appoint on that day a person from my progeny.” Es’aaf-ur-Raghebeen too has narrated the same on Page No. 147.10
Ibn Hajr in the afore-mentioned book on Page 97 writes: Abu Dawoud and Tirmidhi narrate from the Holy Prophet (S.A.W.A) as such: -
“If there remains not more than a day from the life of the earth, surely God will set that day so long until He makes a person appear from my progeny.”
Esa’af-ur-Raghebben too has narrated the same on Page 148.
Ibn Hajr, in the afore-mentioned book on Page 97 says: Abu Dawoud and Tirmidhi have narrated from the Holy Prophet (S.A.W.A) as such: -
“The life of this world shall not cease to exist until a person from my progeny shall come and rule.”
Es’aaf-ur-Raghebben too has narrated the same on Page 148.
Ibn Hajar in ‘Sawa’eq’ (Page 97) writes: Abu Dawoud and Tirmidhi have narrated from the Holy Prophet (S.A.W.A.) as such:
“If there remains not more than a day from the life of the earth, God will set the day so long, until He appoints a person from my progeny.”
Es’aaf-ur-Raghebeen too has narrated the same on Page 148.11
Source: AL-MAHDI (A.S.): By Sayyed Sadruddin Sadr, Translated by: Jalil Dorrani [p 11-12].