Muhammad bin Amr said: We asked Jabir bin Abdullah (may Allah be pleased with them both) about the time of the prayer of the Prophet (peace and blessings be upon him), and he said: He (peace and blessings be upon him) used to pray Zuhr at midday, and Asr while the sun was still bright, and he would pray Maghrib when the sun had set; and as for Isha, when the people came early he would pray it early, and when they were few he would delay it; and he would pray the morning prayer in the darkness (before dawn light).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2044