Chapter on the Detailed Explanation of Prayer, Including the Obligatory and Recommended, and What is Permissible and Not Permissible.

And from him, from al-Nadr ibn Suwayd from Hisham ibn Salim from Sulayman ibn Khalid, who said: I said to Abu Abdillah عليه السلام: "A man is in a deserted land on a cloudy day and he prays not facing the Qiblah. Then it clears up, and he comes to know that he had prayed not facing the Qiblah, what should he do?" Imam عليه السلام said: "If the time remains, then let him repeat his prayer. But if the time has passed, then his effort suffices him."