Hadith 638, 639
Mishkat al-Masabih
Prayer · The Virtues of Prayer - Section 3
Arabic
وَعَن مَالك بَلَغَهُ أَنَّ عَلِيُّ بْنُ أَبِي طَالِبٍ وَعَبْدُ اللَّهِ بْنُ عَبَّاسٍ كَانَا يَقُولَانِ: الصَّلَاةُ الْوُسْطَى صَلَاة الصُّبْح. رَوَاهُ فِي الْمُوَطَّأ وَرَوَاهُ التِّرْمِذِيّ عَن ابْن عَبَّاس وَابْن عمر تَعْلِيقا
English translation
Malik heard that ‘Ali b. Abu Talib and ‘Abdallah b. ‘Abbas used to say, “The middle prayer is the morning prayer.” He transmitted it in al-Muwatta’, and Tirmidhi transmitted it from Ibn ‘Abbas and Ibn ‘Umar without a full isnad.