Clarification that rejecting the acceptance of ahad (single-narrator) hadith is a foreign philosophy, and its refutation with a practical and strong example.

The Shaykh : Now we place before you the guidance of the Salaf so that you may be clear that this philosophy they introduced into Islam only came upon the Muslims after the righteous Salaf. We all know there is no difference between a scholar, a student of knowledge, and a layperson, because it is known from the religion by necessity that the Prophet (peace and blessings be upon him) did not connect with every individual Muslim to convey the call to them. This is impossible, especially for those who came after him (peace be upon him) and after his Companions who followed them with excellence. These people did not receive the call of the Messenger (peace be upon him) directly, but rather through one of the individuals among the Companions who received the call from him (may Allah's prayer and peace be upon him). So you all know that the Prophet (peace and blessings be upon him) used to send some of the callers to some of the lands to call them to Islam. Among the most famous of these callers were 'Ali ibn Abi Talib, Mu'adh ibn Jabal, Abu Musa al-Ash'ari, Duhayhah al-Kalbi, and many others. These were individuals who went to various lands where Islam had not yet entered and where the call of Islam had not reached them, so they called them to what they had received from the Prophet (peace and blessings be upon him), whether it related to creed or to rulings. We said that among these callers was Mu'adh ibn Jabal (may Allah be pleased with him). It is reported in "al-Sahihayn" that when the Prophet (peace and blessings be upon him) sent him to Yemen, he said to him thus: to the end of the hadith. The point is that the Prophet (peace and blessings be upon him) sent an individual, and this individual is Mu'adh, calling the people of Yemen to the same thing the Messenger (peace be upon him) called his Companions—Mu'adh, 'Ali, and others like them—to. And he told him explicitly to start with the creed, as it is said, "Knowledge, if you seek it, is much, and life is short in acquiring it, so prioritize the most important of it, the most important." , Has the argument been established by a single-narrator report? Yes, a single-narrator report. In creed, it is necessary for everyone who asks this question that their answer be yes or no. If he says yes, he has found the right path, because the Prophet (peace and blessings be upon him) cannot send a caller to the disbelievers, to the polytheists, to call them to Islam, and the argument not be established against them by him. And so we say to those who cling to this philosophy—the philosophy of the mass-transmitted report being required in creed and not required in rulings—we say to these people: then you are not callers to creed. This is one of the wonders of the contradiction that occurs today. There are Islamic callers today who spread in many lands of the West or the East, calling to Islam, and the first thing they call to is what relates to faith. But in their calling, they hold that creed, and faith among it, is not established except by a mass-transmitted report, which is an individual. And so I said to some of them: if you go out calling to Islam, that is enough, but this has trapped you. You must go out in tens, if not hundreds, due to the disagreement on the definition of a mass-transmitted report, and you gather in a place and all of you with one voice say: Yes, this is Islam, because a single-narrator report is not an argument. If the one who asks says: The Prophet (peace and blessings be upon him) sent Mu'adh to Yemen and ordered him to call them to "There is no god but Allah," was the argument established or not? If he answers yes, he has found the right path. If he answers no, he has gone astray in clear error. And the cause of this error is that he focused in his mind that in a single-narrator report, creed is not established. So how does the Messenger send a person to call the polytheists to creed, and the argument by this person is not established? That is the far error.