What is the ruling on the difference of fatwa (scholarly legal ruling) among the imams, and what do we follow?

The questioner : Now, regarding the difference in fatwa (scholarly legal ruling) among the imams, Shaykh, if a person asks a scholar for a fatwa (scholarly legal ruling) and he permits it, and another scholar forbids it, how does he act? I am asking you now: if a person is sick and consults two doctors, one says, "Use this medicine," and the other says, "Do not use this medicine, use another one," which one does he follow?

The Shaykh : Definitely, he must consult a third doctor.

The questioner : There is no third doctor.

The Shaykh : By Allah, this is difficult, Shaykh.

The questioner : No, it is not difficult. I am certain that he will follow the doctor he considers the most skilled, is that not so?

The Shaykh : The one whose opinion makes him feel at ease, meaning.

The questioner : The one he considers to be more knowledgeable in medicine, or rather, he follows his opinion. Is that not the case?

The Shaykh : Correct, exactly correct, yes, correct.

The questioner : But regarding the fatwa (scholarly legal ruling).

The Shaykh : Correct.

The questioner : If a fatwa (scholarly legal ruling) comes from two scholars, but you see that one of them is more knowledgeable, more pious, and more trustworthy, take his fatwa (scholarly legal ruling).

The Shaykh : I have taken it. May Allah reward you with good, Shaykh. That is all. May Allah reward you with good.

The questioner : Is it clear or not clear?

The Shaykh : No, it is clear, that is all. Thank you, praise be to Allah. May Allah be pleased with you. Thank you, goodbye.