Sahih Bukhari
Sahih Bukhari Volume 009, Book 089, Hadith Number 312.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 89. Judgments (Ahkaam)
Narrated By 'Abdullah bin Dinar : When the people took the oath of allegiance to 'Abdul Malik, 'Abdullah bin 'Umar wrote to him: "To Allah's Slave, 'Abdul Malik, Chief of the believers, I give the Pledge of allegiance that I will listen to and obey Allah's Slave, 'Abdul Malik, Chief of the believers, according to Allah's Laws and the Traditions of His Apostle in whatever is within my ability; and my sons too, give the same pledge."