Mukhtasar Muslim (Abridged) 210 — Prohibition of praying at sunrise

‘Umm al-Mu’minin Aisha Siddiqa (may Allah be pleased with her) says that the Messenger of Allah (peace and blessings be upon him) never left the two rak’ahs after Asr. The narrator says that Umm al-Mu’minin Aisha Siddiqa (may Allah be pleased with her) said that the Messenger of Allah (peace and blessings be upon him) said: Especially do not make it a habit to perform your prayers at the time of sunrise and sunset, that you always perform them at that time. (That is, do not delay Fajr and Asr, but rather perform them at their earliest time.)