أَمَا الْحِمَامُ مِيعَادُكَ فَمَا إِعْدَادُكَ؟
Is not death your appointed meeting? Then what have you prepared?
Al-ḥimām means death in this context; it is not the word for a pigeon or a bathhouse. Mīʿād is an appointed time or meeting; iʿdād means preparation.
The preacher does not ask for the date of anyone’s death. He asks whether a person facing an inevitable end has made meaningful preparations.