What is the difference between a specific case (waqi'at al-'ayn) and a general case (waqi'at al-hal)?

Question:
I ask Allah to do you good. Your Eminence, the father, the questioner asks: Is there a difference between a general case (waqi'at al-hal) and a specific case (waqi'at al-'ayn)? And what is the criterion for that?

Answer:
A specific case (waqi'at al-'ayn) is known; it is one that has no generality. A specific case (waqi'at al-'ayn) is one that has no generality, such as the saying of the Prophet (peace and blessings be upon him) to Shuhaylah bint Suhayl, "Nurse him," meaning Abu Hudhayfah, meaning the client of Abu Hudhayfah, "Nurse him, and he will be forbidden to you." All of this is a specific case with no generality. The major kinship (dhahab al-kabir) does not make marriage forbidden, but this is specific to Shuhaylah bint Suhayl only. Yes.