And in both of them is the hadith of 'A'ishah: (They used to build a mosque over the grave of a righteous man when he died among them, and in it: (Those are the worst of creation)).

The Shaykh : We begin with his statement: "And in both of them is the hadith of 'A'ishah". This is where today's lesson began. He said: "And in both of them—meaning al-Bukhari and Muslim—is the hadith of 'A'ishah (may Allah be pleased with her):

When a pious person amongst them (the Jews and Christians) died they used to build a place of worship and prostration on his grave.

كانوا -أي النّصارى- إذا مات فيهم الرجل الصالح بنوا على قبره مسجداً

Bulugh al-Maram 2:125

And in it:

Those are the worst of creation

أولئك شرار الخلق

".
"They used to build a mosque over the grave of a righteous man when he died among them." This is more general than whether he was a prophet or not. A righteous man is one who is upright in his religion, whether he is a prophet or not. They built a mosque over his grave. This clarifies the meaning of his statement: meaning in the sight of Allah (Mighty and Majestic). "Those" is with a kasrah because the demonstrative pronoun changes according to the person being addressed, and the demonstrative pronoun changes according to the thing being pointed to. This is a test for the student. If you are told to point to one person while addressing two people, how do you say it? Raise your hand, raise your hand. Yes, how do you say it? Point to one person while addressing two people?
The student: That.

The Shaykh : No... the plural, yes, Waleed?
The student: They are, O Shaykh.

The Shaykh : Wrong. It is "that" (dhalikama), as Allah (Mighty and Majestic) said about Yusuf: addressing his two companions in prison, . Point to a female while addressing a female, Sharaf?
The student: That (dhalik).

The Shaykh : Wrong, Faisal?
The student: That (tallik).

The Shaykh : "That" (tallik) is correct, because the taa is used to point to a female, and the kaf with a kasrah is used to address a female. Now, this is the well-known, eloquent language: the kaf changes according to the person being addressed. If the addressee is a singular male, it becomes a singular male; if dual, it becomes dual; if a group of males, it becomes plural... and if a group of females, it becomes plural with a noon. Allah the Exalted said: So "that" (dhalikunna) points to one person, Yusuf, and therefore "dha" was used, and she was addressing a group of women. There is another language in which the kaf is always with a fathah, and the singular is always used, considering the person, considering the person. If the addressee is a group or dual, it is considered by gender, by the person being a singular male, and by gender being singular, not dual or plural. There is a third language in which, if women are addressed, it is always singular with a kasrah, and if men are addressed, it is singular with a fathah. But the first language is the eloquent language. Here, the addressee is a single female, and the thing being pointed to is a group, namely those who build mosques over the graves of their righteous ones.