yadan means, “without any power (to resist).”
• al-naghf are maggots.
• fursā is the plural of farīs, meaning a slain person.
• az-zulfah—with fatḥah on the zāʾ, lām, and qāf—is also transmitted as az-zulfah—with ḍamma on the zāʾ, sukūn on the lām, and with an fāʾ—and it denotes a mirror.
• al-ʿiṣābah is a group.
• ar-risl, with kasrah under the rāʾ, is milk.
• al-laqḥah is a milch camel; al-labūn has the same sense.
• al-fiʾām—with kasrah on the fāʾ followed by a hamzah—signifies a large company of people.
• al-fakhdh is a subdivision of a tribe, smaller than a full clan.

[Explanation]
The author—may Allah have mercy on him—says in his Riyāḍ al-Ṣāliḥīn: “The Book of Manthūrāt and Mulaḥ.” Manthūrāt are topics scattered among various headings rather than confined to a single subject, and mulaḥ is the plural of mulḥah, referring to whatever the listener finds pleasant and appealing.

He begins with the first chapter, “The Antichrist (al-Dajjāl) and the Portents of the Hour.” The term Dajjāl is an intensive form of dajl, “deception,” so al-Dajjāl is the consummate liar who is known for nothing but falsehood. The “portents of the Hour” are the signs heralding its nearness, as Allah the Exalted says: “So are they waiting for anything except the Hour to come upon them suddenly? But its portents have already come” (Qur’an 47:18)—meaning its imminent signs.

He then relates the lengthy hadith of an-Nawwās ibn Samʿān, in which the Prophet ﷺ spoke about the Dajjāl one morning—at daybreak on a certain occasion—and lowered and raised his voice regarding him, that is, he elaborated at such length that they thought he was among a company