Ayesha instructed me to write out a copy of the Quran for her and said, "When you reach this verse, let me know: 'Guard strictly the prayers, especially the middle prayer'."When I reached it, I informed her, and she dictated to me, "Guard strictly the prayers, especially the middle prayer and the afternoon prayer, and stand before Allah in devout obedience" [Baqarah 2:238].Then she said, "I heard it this way from the Messenger of Allah ﷺ."
أخبرنا قتيبة عن مالك عن زيد بن أسلم عن القعقاع بن حكيم
أمرتني عائشة أن أكتب لها مصحفا فقالت إذا بلغت هذه الآية فآذني {حافظوا على الصلوات والصلاة الوسطى} فلما بلغتها آذنتها فأملت علي حافظوا على الصلوات والصلاة الوسطى وصلاة العصر وقوموا لله قانتين ثم قالت سمعتها من رسول الله ﷺ
Muslim narrated it in the Book of Mosques, chapter, "Evidence for those who say the middle prayer is the Asr prayer," hadith 629, from the hadith of Malik, through this route, and it is also found in Muwatta (Yahya), 1/138–139.