Sa’ad ibn Abdillah from Ibrahim ibn Hashim from Isma'il ibn Marrar from Yunus ibn Abd al-Rahman from Abdillah ibn Sinan from Abu Abdillah عليه السلام, peace be upon him, who said: Imam al-Sadiq عليه السلام said: “Whoever comes to his estate and does not intend to stay for ten days, he should shorten (the prayer), but if he intends to stay for ten days, he should complete the prayer.”