What are the sects from which the Prophet (peace and blessings be upon him) warned?

Question:
Your Eminence the Shaykh, the questioner says: I love you for the sake of Allah. He asks: What are the sects from which the Prophet (peace and blessings be upon him) warned, and what do you advise us regarding these sects?

Answer:
As for love for the sake of Allah, it is among the best of the means of nearness to Allah. Allah the Exalted says: "And the love of the believers is obligatory for those who love each other for the sake of Allah, and for those who exchange greetings for the sake of Allah, and for those who sit together for the sake of Allah, and for those who exchange greetings for the sake of Allah." And we say: May Allah love you, the One who tested you with this. And the Prophet (peace and blessings be upon him) said: Allah says on the Day of Resurrection: "Where are those who loved each other for My Majesty? Today I will shade them in My shade, on a day when there is no shade except My shade." And the Prophet (peace and blessings be upon him) said: He mentioned two men who loved each other for the sake of Allah; they met for that and parted for that. As for the sects, the Prophet (peace and blessings be upon him) explained them and said: "My Ummah will split into seventy-three sects, all of them in the Fire except one." They said: "Who are they, O Messenger of Allah?" He said: "The Jama'ah." In another wording, he said: "That upon which I am and my Companions." So whoever opposes the path of the Messenger is among the seventy-two. So you must adhere to the path of the Prophet (peace and blessings be upon him), his Sunnah, and what his Companions and the scholars after them followed. This is the path of salvation. It is the oneness of Allah, obedience to Him, following His Shari'ah, and caution against everything He has forbidden. Whoever opposes this falls into the seventy-two. So it is obligatory for every Muslim man and woman to establish the oneness of Allah, obey Him, follow His Shari'ah, and proceed upon the methodology of his Companions (may Allah be pleased with them) in performing what Allah has made obligatory, leaving what Allah has forbidden, and standing by the limits of Allah. This is the path of salvation. Yes. Allah the Exalted said: