Those who remained attached to the Holy House of the Holy prophet...
Those who remained attached to the Holy House of the Holy prophet, were Known as the Shias of Ali Ibn Abi Talib, and the True or the Original Islam was identified with the name Mazhabe-Ja’fari or Shia'ism (i.e., the Original Islam followed by the Shias).Thus Shia'ism is no other than the Islam-Original, but it is only identified with the name 'Shia'ism' just to distinguish it against the corrupted form.
One can judge the Truth in this statement from the brief explanation of the Faith and this Article given in this book. Thus the Original Islam is identified with the distinguishing token name 'Tashiyyu' or Shia'ism and its followers are known as the Shias. It means the followers of the Islam-Original without the subsequent adulteration effected in it.
Shia'ism (Islam-Original) strictly follows the Holy Qur'an, and the Holy Prophet guided by the divinely commissioned Twelve Holy Imams, whose physical and spiritual purity and personal excellence, the Islamic World as a whole unanimously acknowledges. Shia'ism, in order to help people to remain attached only to the Word of God as interpreted by the Holy Prophet, wants its followers to strictly abide by the following Declarations of the Holy Prophet.
At the start of his apostolic mission he declared that Ali was His Deputy, his Vicegerent, his Successor or his Caliph, with his orders to the assembly to listen to Ali and to obey him. Before the huge assembly of pilgrims numbering to several thousands, after his Last Hajj or the pilgrimage, on the Eighteenth of Zilhaj 10 A.H.
at Ghadeer al-Khum: “Of whomsoever I am the Maula (or the Lord), this Ali is his Maula (or the Lord).” Just before his departure from this world saying: “I leave behind me amidst you Two important things. The Book of God (The Holy Qur'an) and the members of my family. As long as you keep yourselves attached to these Two, you shall never get astray after me.
These Two shall never be separated from one another until they meet me at the Spring of Kauther.” With the above three main guiding factors, the Islam-Original or Shia'ism, keeps its faithful followers, the Shias, strictly attached to the Final Word of God, (the Qur'an), the Holy , and his holy 'Ahlul Bayt (i.e., the Divinely chosen members) of the apostolic family. Shia'ism demands every Shia to cling fast to virtue and to be always with the virtuous, loving them more than their own lives.