Household of Muhammad, the laws of Islam
Nahj al-Balāgha|Volume 1|Book 1|Chapter 120
تَاللهِ لَقَدْ عُلِّمْتُ تَبْلِيغَ الرِّسَالاَتِ، وَإِتْمَامَ الْعِدَاتِ، وَتَمَامَ الْكَلِمَاتَ. وَعِنْدَنَا ـ أَهْلَ الْبَيْتِ ـ أَبْوَابُ الْحُكْمِ وَضِيَاءُ الاْمْرِ. أَلاَ وَإِنَّ شَرَائِعَ الدِّينِ وَاحِدَةٌ، وَسُبُلَهُ قَاصِدَةٌ، مَنْ أَخَذَ بِهَا لَحِقَ وَغَنِمَ، وَمَنْ وَقَفَ عَنْهَا ضَلَّ وَنَدِمَ.
By Allāh, I have knowledge of the conveyance of messages, fulfilment of promises and of entire expressions. We the people of the house (of the Prophet — Ahlu’l-bayt) possess the doors of wisdom and light of governance. Beware that the paths of religion are one and its highways are straight. He who follows them achieves (the aim) and secures (the objective). And he who stood away from it went astray and incurred repentance.