حَدَّثَنِي مَالِكٌ، عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، قَالَ كُنَّا إِذَا بَايَعْنَا رَسُولَ اللَّهِ صلى الله عليه وسلم عَلَى السَّمْعِ وَالطَّاعَةِ يَقُولُ لَنَا رَسُولُ اللَّهِ صلى الله عليه وسلم ‏"‏ فِيمَا اسْتَطَعْتُمْ ‏"‏ ‏.‏

Malik related to me from Abdullah ibn Dinar that Abdullah ibnUmar wrote to Abd al-Malik ibn Marwan, making an oath of allegiance.He wrote, "In the name of Allah, the Merciful, the Compassionate. Tothe slave of Allah, Abd al-Malik, the amir al-muminin, Peace be uponyou. I praise Allah to you. There is no god but Him. I acknowledgeyour right to my hearing and my obedience according to the sunna ofAllah and the sunna of His Prophet, in what I am able."