From `Abdul `Aziz Bin `Abdullah Ibn Baz to our dear honorable brother, may Allah grant him success for every goodness, Amen. Mercy, and blessings of Allah be upon you. Assalamo alaikom wa rahmatullah wa barakato
I have received your noble letter and understood what was included. I would like to inform you that the Shiites contain many sects and every sect has forms of Bid`ahs (rejected innovations in religion). The most dangerous of these sects is that of the Rafidah Khomeiniah Ithna 'Ashriyyah. This is due to the great number of those calling to it and what it implies of major Shirk (associating others in worship with Allah), such as seeking help from the household of the Prophet and thinking that they know the unseen, especially the Imams of the Ithna 'Ashriyyah sect as claimed by them, and because they disbelieve in and insult most of the Companions, such as Abu Bakr and `Umar (may Allah be pleased with both of them). We implore Allah to grant us safety from their falsehood.
So ask the people of the Reminder, if you do not know.
Yet, this does not prevent us from calling them to Allah, guiding them to the right path, and warning them against the falsehood they committed in the light of the Shar`i proofs quoted from the Qur'an and the Sunnah. I ask Allah for you and your brothers of Ahl AlSunnah (those adhering to the Sunnah) to grant you more success to what pleases Him and to help you do everything that is good. I advise you to keep patient, truthful, sincere, steadfast, to be wise and take care to use the good way in the field of calling to Allah, to recite the Noble Qur'an repeatedly, reflect upon, study its meanings, and to refer to the books of Ahl Al Sunnah (those adhering to the Sunnah) concerning what is difficult, such as the book of the Tafsirs of Ibn Jarir, Ibn Kathir, and AlBaghawy Also, I advise you to learn by heart part of the Sunnah, such as "Bulugh Al Maram" by AlHafizh Ibn Hajar and "`Umdat AlAhkam" in Hadith by AlHafizh `AbdulGhany Ibn `AbdulWahid Al Maqdisy