نُبَايِعُ رَسُولَ اللَّهِ صلى الله عليه وسلم عَلَى السَّمْعِ وَالطَّاعَةِ ثُمَّ يَقُولُ " فِيمَا اسْتَطَعْتَ "
It was narrated that Ibn 'Umar said: "We used to pledge to the Messenger of Allah to hear and obey, the he said: 'In as much as you can."'