Mishkat al-Masabih 4 Prayer كتاب الصلاة 581

وَعَنْهَا قَالَتْ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «رَكْعَتَا الْفَجْرِ خَيْرٌ مِنَ الدُّنْيَا وَمَا فِيهَا» . رَوَاهُ مُسلم

She reported God’s Messenger as saying, “The two rak’as at dawn are better than this world and what it contains.” Muslim transmitted it.