All Praise is to Allaah who says in His Book:
This day have I completed (perfected) your religion for you and have completed My favour upon you and have chosen for you Islaam as your religion
and Who also says
And no by your Lord, they cannot be real believers until they make you as a judge in all disputes between them and then do not find any resistance against what you have decided in their souls but accept (it) with the fullest submission
and Who also said:
And the first to embrace Islam of the Muhajirun (those who migrated from Makkah to Madinah) and the Ansar (the citizens of Madinah who helped and gave aid to the Muhajirun) and also those who followed them exactly (in faith). Allaah is well pleased with them asa they are well pleased with Him. He has prepared for them Gardens under which rivers flow (Paradise), to dwell therein forever. That is the supreme success.
And may prayers and peace be upon His friend and chosen one, Muhammad bin Abdullaah, who said: "I have left you upon clear proof. Its night is like its day. No one deviates from it except one who is destroyed" [Musnad Ahmad], and who also said: "Whoever does an action which we have not commanded will have it rejected." [Bukaaree]
And [prayers and peace] be upon his family and companions to whom the Messenger (sallallaahu alayhi wasallam) said: "I advise you to fear Allaah (have taqwaa of Him) and to listen and obey (to the leader) even if it is a black abyssinian slave. He amongst you lives for long will see many controversies/differences. Therefore, you must stick to my sunnah and the sunnah of the rightly guided caliphs. Stick to it (the sunnah) with your molar teeth and beware of the newly-invented matters as every newly-invented matter is an innovation and every innovation is misguidance", and who also said: "And my ummah will split into 73 groups all of them in the Hellfire except for one", then it was said: 'And what is this one group? He said: "It is that which I am upon this day and my companions."
Nowadays there is a lot of talk regarding the muslim groups and the majority of those who speak about them can be divided into two types: Those who praise and those who criticise, due to the differences in the purposes of the criticism. For this reason I loved to talk about two groups from amongs them so that I make clear, what I believe to be correct and that I make clear some of the things which some of the noble brothers have complained about. Also, that I may respond to some of the queries which circulate in the minds of many of the youth, while joining together the branches with the fundamentals, which these groups have gone towards (and adopted), so I say and with Allaah lies success:
Know my brother - may Allaah make me and you receive every goodness - that the true da'wah is the da'wah that stands by and sticks to the Book and the Sunnah upon the understanding of the Salaf us-Saalih (the Righteous Predecessors) and that any da'wah that leaves anything from what has just been mentioned has deviated and swerved from the path of truth and correctness to the extent of its abandonment of what has been mentioned above.
Know also that every group claims to be sticking to the Book and the Sunnah so what do you see is the difference between these groups and the call of the group upon the truth?
The differences are many and amongst them are:
Firstly: That the truthful call is the one that clings to the Book and the Sunnah upon the understanding of the Salaf us-Saalih and all the other calls cling to the Book and the Sunnah upon the understanding of the one who initiated and founded it. The Jahmiyyah cling to the Book and the Sunnah upon the understanding of Ja'd bin Dirham and Jahm bin Safwaan. The Ash'ariyyah cling to the Book and the Sunnah upon the understanding of their scholars who attribute themselves to Abu al-Hasan al-Ash'ariyy, the Tableeghiyyah cling to the Book and the Sunnah upon the understanding of its founder, Muhammad Ilyaas and the Ikhwaaniyyah with all its types and offshoots and amongst them are the Qutubiyyah cling to the Book and the Sunnah upon the understanding of its founder(s) Hassan al-Bannaa, Saeed Qutub, Hudaibee and others.
Secondly: That the call of truth is the one whose adherents take their knowledge from the leaders of the da'wah of the Salafiyyah in every age and era, who study under and learn from the living amongst them and read the books of those who are dead amongst them, from every generation in opposition to the calls of falsehood since they are the enemies of the scholars of the Salaf, the living amongst them and the dead. In fact they are behind every opposition to them even if they claim openly that they are followers of them.