١٢٥. وَقَالَ (عليه ‏السلام): لَأَنْسُبَنَّ الْإِسْلَامَ نِسْبَةً لَمْ يَنْسُبْهَا أَحَدٌ قَبْلِى الْإِسْلَامُ هُوَ التَّسْلِيمُ وَالتَّسْلِيمُ هُوَ الْيَقِينُ وَالْيَقِينُ هُوَ التَّصْدِيقُ وَالتَّصْدِيقُ هُوَ الْإِقْرَارُ وَالْإِقْرَارُ هُوَ الْأَدَاءُ وَالْأَدَاءُ هُوَ الْعَمَلُ.
125. Amīr al-mu’minīn, peace be upon him, said: I am defining Islam as no one has defined before me: Islam is submission, submission is conviction, conviction is affirmation, affirmation is acknowledgement, acknowledgement is discharge (of obligations), and discharge of obligations is action.