Mas’ala 5563الأمShafi'ivol. 2, p. 118vol. 2, p. 118 وَلَا بَأْسَ أَنْ يَعْتَكِفَ الرَّجُلُ اللَّيْلَةَ Read the whole chapterCopy with source On the map: Retreat in the mosqueCompare