What is the stronger position regarding the issue of the authority of ahad reports in matters of creed?

The questioner : If you please, there is a disagreement among Muslim scholars regarding the acceptance of ahad reports in creed. So, in your opinion, what is the correct thing?

The Shaykh : Good. In this matter, we must know that distinguishing between the rulings of the Shari'ah such that it is obligatory to accept some of them if their attribution to the Prophet (peace and blessings be upon him) is correct, and it is not obligatory to accept what is established from the Messenger (peace be upon him) in some other cases—this division is foreign to Islam and is a philosophy with no basis in the religion of Islam. This matter does not require extensive research or lengthening of the speech, even though the scope of discussion is very wide. However, I will approach the subject from the nearest path without entering into a recitation of the scriptural evidence that some students of knowledge understand, but I will mention what all Muslims share in understanding. We all know that the Prophet (peace and blessings be upon him) was sent alone to all people as a bringer of good news and a warner, and that he conveyed the message and fulfilled the trust. This is the first point in which no Muslim doubts. The second point: The Prophet's (peace and blessings be upon him) conveyance of Islam was in two forms. The first is that he conveyed Islam directly to people with his own person. When we mention this fact, I do not think anyone's mind is incapable of comprehending what I will mention, which is that when the Prophet (peace and blessings be upon him) conveyed the Shari'ah of Islam, he did not convey it to every individual among the obligated people in that world. Let us take a close example: when the Prophet (peace and blessings be upon him) was in the Sacred Mosque at the beginning of the call, where he encountered what he encountered of calamities and hardship, did the disbelievers who were not in the Sacred Mosque hear his words as the disbelievers who were in his presence heard them? The answer is no. This is an obvious fact that everyone shares in knowing; it is not required to be a student of knowledge. Likewise, when the people of Makkah were hearing the Messenger convey the rulings of Allah and the Shari'ah of Allah by reciting the verses of Allah, only some of them heard it. How did the Shari'ah of Allah reach the others? It did not reach them by hearing the words of the Messenger directly. Rather, and this is a reality in every time and place, now in this assembly, one of you may hear a ruling or a discussion like this one and convey it to someone who was not present in this assembly. The one who heard it from the teacher heard it directly from him, but this teacher conveyed it to the others. The others did not hear it from the teacher. This is an approximation. The Messenger has the most perfect example. When the Messenger (peace and blessings be upon him) was conveying a verse or reciting a hadith, he heard itThose present : As for the others, they heard it through whom? Those who heard from the Messenger (peace be upon him). This is a second point, very obvious, that does not accept discussion or argument.
The Shaykh : We support this with some well-known narrations in Islamic history, which we can say no one among the Muslims is ignorant of, that the Prophet (peace and blessings be upon him) sent messengers on his behalf to the heads of states, the kings of the states, such as Kisra, Caesar, and the King of Abyssinia. What was his name? The Najashi. Yes, exactly. And he sent callers to Yemen: Ali, Abu Musa, and Mu'adh. These messengers whom the Messenger (peace be upon him) sent to convey the call that they heard from him (peace and blessings be upon him) from his noble mouth, they conveyed what they heard from him to those people. So those people did not receive the Shari'ah from the infallible Prophet, but they received the Shari'ah from an individual, a person.