ENOfficial
Zaid b. Thabit and ‘A’isha said that the middle prayer is the noon prayer. Malik transmitted it from Zaid and Tirmidhi from both of them without a full isnad.
Source: sunnah.com
Other translations
Arabic
عَن زيد بن ثَابت وَعَائِشَة قَالَا: الصَّلَاةُ الْوُسْطَى صَلَاةُ الظُّهْرِ رَوَاهُ مَالِكٌ عَن زيد وَالتِّرْمِذِيّ عَنْهُمَا تَعْلِيقا
sunnah.com