It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) used to say on the pulpit: "I declare it a sin and a cause of hardship to squander the wealth (and rights) of the two weak ones: the orphan and the woman." This hadith is sahih (authentic) on the condition of Imam Muslim, but the two Shaykhs (Bukhari and Muslim) did not record it.