"When we gave our pledge to the Messenger of Allah to hear and obey, he would say to us: 'In as much as you can". (Using translation from Nasāʾī 4188)
كُنَّا حِينَ نُبَايِعُ رَسُولَ اللهِ ﷺ عَلَى السَّمْعِ وَالطَّاعَةِ يَقُولُ لَنَا «فِيمَا اسْتَطَعْتَ»