O you who believe! Observe your duty to Allah, and give up what remaineth (due to you) from usury, if you are (in truth) believers. And if you do not, then be warned of war (against you) from Allah and His messenger. And if you repent, then you have your principal (without interest). Wrong not, and you shall not be wronged. (Qur'an 2:278-279, Pickthall)
O Prophet! Strive against the disbelievers and the hypocrites! Be harsh with them. Their ultimate abode is hell, a hapless journey's end. (Qur'an 9:73, Pitckthall)
And if two parties of believers fall to fighting, then make peace between them. And if one party of them doeth wrong to the other, fight ye that which doeth wrong till it return unto the ordinance of Allah; then, if it return, make peace between them justly, and act equitably. Lo! Allah loveth the equitable. (Qur'an 49:9, Pickthall)
The Sunnah also teaches the same thing.
Narrated Daylam al-Himyari: I asked the Prophet (peace_be_upon_him) and said: Apostle of Allah! we live in a cold land in which we do heavy work and we make a liquor from wheat to get strength from it for our work and to stand the cold of our country. He asked: Is it intoxicating? I replied: Yes. He said: You must avoid it. I said: The people will not abandon it. He said: If they do not abandon it, fight with them. (Abu Dawood: bk 26, no. 3675, Hasan)
The owners of the mosque of opposition had come to the apostle as he was preparing
for (to attack) Tabuk, saying, "We have built a mosque for the sick and needy and for nights of bad weather, and we should like you to come to us and pray for us there." He said that he was on the point of travelling, and was preoccupied ... and that when he came back if God willed he would come to them and pray for them in it. When he stopped in Dhu Awan news of the mosque came to him, and he summoned Malik b. al-Dukhshum ... and Ma'n b. `Adiy ... and told them to go to the mosque of those evil men and destroy and burn it. ... and then the two of them ran into the mosque where its people were and burned and destroyed it and the people ran away from it. (Ibn Ishaq, Sirat Rasul Allah, p. 609)
Narrated Abu Huraira: When Allah's Apostle died and Abu Bakr was elected as a Caliph after him, some of the Arabs reverted to disbelief. Umar said to Abu Bakr, "How dare you fight the people when Allah's Apostle said: I have been ordered to fight the people till they say: None has the right to be worshipped but Allah, and whoever says: None has the right to be worshipped but Allah, saves his wealth and his life from me unless he deserves a legal punishment justy, and his account will be with Allah!" Abu Bakr said, "By Allah, I will fight him who discriminates between Zakat and prayers, for Zakat is the compulsory right to be taken from the wealth by Allah, if they refuse to give me even a tying rope which they use to give to Allah's
Apostle, I would fight them for withholding it." Umar said, "By Allah, it was nothing, except I saw that Allah had opened the chest of Abu Bakr to the fight, and I came to know for certain that was the truth." (Bukhari: vol 9, bk. 92, no. 388, Khan)
Thus the Qur'an and Sunnah command faithful Muslims to make war on those Muslims who do not obey all of Islam's teaching. This is a very important aspect of Jihad. Jihad is not just against non-Muslims; it is also against Muslims. This is why Muslim groups in Pakistan blow up mosques of those they believe to be false Muslims.
How do you control a doctrine this? Who determines who is "rightly guided"? This is madness and nothing but trouble for Muslims and everyone one else. This is not God's way and does not bring about true worship of God. It is the gospel that is the right way for it seeks to change hearts by the power of God's spirit not by human violence.