Sayyidah Asma' bint Umays (may Allah be pleased with her) narrates: The Prophet (peace and blessings be upon him) offered the Zuhr prayer at al-Sahba', then he sent Sayyiduna Ali (may Allah be pleased with him) on some errand. When he returned, the Prophet (peace and blessings be upon him) had already offered the Asr prayer. The Prophet (peace and blessings be upon him) laid his head in the lap of Sayyiduna Ali (may Allah be pleased with him) and fell asleep. Sayyiduna Ali (may Allah be pleased with him) did not move until the sun set. The Prophet (peace and blessings be upon him) said: "O Allah! Your servant Ali kept himself held back for the sake of Your Prophet, so return the sun for him." Sayyidah Asma' (may Allah be pleased with her) narrates: The sun rose again until it stood over the mountains and the land. Sayyiduna Ali (may Allah be pleased with him) got up, performed ablution and offered the prayer, and after that the sun set at al-Sahba'.