(a) Hasan al-Basri (may Allah have mercy on him) narrates that people considered it recommended that when a man has prayed the morning prayer he should not eat anything until the sun rises, and that he should offer two rak'ahs for Allah.
(b) It has been narrated to us on the authority of Malik bin Anas (may Allah have mercy on him): I saw the people, and they would not even talk after the morning prayer until the sun had risen.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3032