[2581] His wife.
[2582] Exegetes have speculated as to why she laughed, but mostly they agree that this was because she wondered at how ignorant she thought the people of Lūṭ were of their imminent fate (cf. al-Ṭabarī), or for her elation at their well-earned doom (cf. Ibn Kathīr).
[2583] She was given the happy news of a child, Isaac, and a grandchild, Jacob (cf. al-Ṭabarī, al-Qurṭubī), in person and pointedly because she had no children of her own, unlike Abraham (عليه السلام) who had a son, Prophet Ishmael (عليه السلام) through Hagar. This, then, was particularly happy news for Sarah (cf. Abū Ḥayyān).