It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "A woman's prayer in her (inner) room is better than her prayer in her (outer) chamber, and her prayer in her closet (the most secluded part) is better than her prayer in her room." This hadith is sahih (authentic) on the condition of Imam Bukhari and Imam Muslim, but they did not record it, while they both used Muwarriq bin Mushamrij al-Ijli as evidence.