It is narrated from Qasim Shaybani (may Allah have mercy on him) that once Hazrat Zaid bin Arqam (may Allah be pleased with him) went to the people of Quba. They were performing prayer at the time of Duha. He said, "Do these people even know that this prayer is more virtuous at another time? The Noble Prophet (peace and blessings be upon him) said: The prayer of those who turn to Allah is performed at the time when the feet of the young camels begin to burn (from the heat)."