Al-Qasim al-Shaybani (may Allah have mercy on him) narrates from Sayyiduna Zayd bin Arqam (may Allah be pleased with him) that he saw people sitting with a storyteller; when the sun rose, they hurried to the pillars of the mosque and began praying. So Sayyiduna Zayd bin Arqam (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) said: "The time of the prayer of the awwabin is when the feet of the young camels begin to burn."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4909