They have diverted us from (offering) the middle prayer. i. e. the 'Asr prayer. May Allah fill their bellies and their graves with fire, or he said: May Allah stuff their bellies and their graves with fire.
Sahih Muslim Book 5, Hadith 260
← Previous Hadith The Messenger of Allah (ﷺ) said on the day (of the Battle) of Ahzab: They diverted us from saying the middle prayer, i. e. the 'Asr prayer. May Allah fill their houses and graves with fire; he then observed this prayer between the evening prayer and the night prayer.

Sahih Muslim Book 5, Hadith 259 Next Hadith → 'A'isha ordered me to transcribe a copy of the Qur'an for her and said: When you reach this verse:" Guard the prayers and the middle prayer" (ii. 238), inform me; so when I reached it, I informed her and she gave me dictation (like this): Guard the prayers and the middle prayer and the afternoon prayer, and stand up truly obedient to Allah. 'A'isha said: This is how I have heard from the Messenger of Allah (ﷺ).

Sahih Muslim Book 5, Hadith 261