Shaykh Saalih al-Fawzaan:
There is only one jamaa’ah (in reality), those who are upon that which the Prophet (sallallahu alaihi wa sallam) and his companions (Allah be pleased with them) were upon, he (sallallahu alaihi wa sallam) said:
“My nation will split into 73 sects, all of them in the fire except for one, they (the companions) asked: “Which is it oh Messenger of Allah?! He replied: “That which I and my companions are upon”.(1)
He (sallallahu alaihi wa sallam) said:
“Whosoever lives long from amongst you, will see much differing, so upon you is my sunnah and the sunnah of the rightly guided caliphs, cling onto it and bite onto it with your molar teeth.” (2)
And he (sallallahu alaihi wa sallam) said:
“Indeed, i have left among you, that which if you were to cling onto it, you would never be misguided after me: Book of Allah and my Sunnah.” (3)
Therefore, there is only one jamaa’ah, Jamaa’ah of the people of tawheed, jamaa’ah of the Muslims who are upon the methodology of the pious predecessors.
Allah (subhaanahu wa ta’aala) said,
And the first to embrace Islam of the Muhajirun (those who migrated from Makkah to Al-Madinah) and the Ansar (the citizens of Al-Madinah who helped and gave aid to the Muhajirun) and also those who followed them exactly (in Faith). (Soorah At-Tawbah:100).
Therefore, it is obligatory to follow the salaf, begining of this nation and the Virtuous Generations, there is only one jamaa’ah for us, it is that which is on the truth, those who oppose them, are opposing jamaa’at, their opposition is of varying levels, some are extremely far (from the truth) and some are closer, from them are disbelievers and from them are those who are misguided.
The groups differ in their opposition, however the jamaa’ah which is on the truth is one and we adhere to this one group, so that we can be from this one group (which is saved from the fire).
Muhaadaraat fil-Aqeedah wad-Dawah; al-Majmoo’a ath-Thaaniya Vol.1 pgs. 376-377