Speaking about holding fast to the Book and the Sunnah and understanding them according to the understanding of the Salaf.

The Shaykh : The standing of the Muslims will never be established unless they return to what their Lord, the Lord of the worlds, has commanded them, which is unity based on the Book and the Sunnah. Do you see how the Arab states are in turmoil? And how they are in disagreement? Every day there is a new tune and a new call, and the reason is that they do not hold fast to the firm handhold, which is...
And they will continue to live like this, and they will have no life ever, unless they return to holding fast to the Book and the Sunnah, as he (peace and blessings be upon him) said in the authentic hadith, which is in reality our constitution: . This is the disease and this is the cure: , meaning: you have entered into forbidden pacts in Islam and you have made them lawful by the slightest of deceptions; , meaning: you have competed with one another for this world, and nothing of the religion, the honor of Islam and the Muslims, matters to you anymore; . This is the cure; returning to the religion is the cure.
The religion today has many concepts, and I say this with complete frankness: Is this religion, which is the cure for this disease, according to the Salafi concept or the Khulafi concept? The religion that is the treatment for this disease that the Messenger (peace be upon him) described in this hadith; is it according to the Salafi concept or the Khulafi concept? Is it according to the madhhab concept or the Sufi concept? Is it according to the concept of such-and-such party or such-and-such party? The answer is: . Now, Islam—returning to...—Islam has many concepts; so by which concept do we adopt the religion in its quality as a cure for this disease? We say: the concept of the righteous Salaf. So what do the others say? Whoever says what we say, that is what we want, and that is what we must cooperate upon. And whoever says other than what we say has strayed far astray.