The believers are protectors of one another. So when we find those in need, such as the orphans and the widows, we should strive to help them. Below is are some reminders of the rewards for doing so.
“And they feed, for the love of Allah, the poor, the orphan, and the captive…” [Surah al-Insan]
“One who cares for widows and the poor is like those who fight in the way of Allah or those who spend their days fasting and their nights praying.”[Bukhari]
Abu Hurayra (may Allah be pleased with him) reported that the Prophet, may Allah bless him and grant him peace, said, “The person who strives on behalf of the widows and poor is like those who strive in the way of Allah and like those who fast in the day and pray at night.”
‘A’isha As-Siddiqa (may Allah be pleased with her) said, “A woman came to me who had two of her daughters with her. She asked me for something, but I could not find anything except for a single date which I gave her. She divided it between her daughters and then got up and left. The Prophet, may Allah bless him and grant him peace, came in and I told him what had happened. He said, ‘Whoever looks after these girls in any way and is good to them will have them as a veil from the Fire.'”
Abu Hurayra (may Allah be pleased with him) reported that the Messenger of Allah, may Allah bless him and grant him peace, said, “The best house among the Muslims is the house in which orphans are well treated. The worst house among the Muslims is the house in which orphans are ill treated. I and the guardian of the orphan will be in the Garden like that,” indicating his two fingers.
“Satan threatens you with poverty and orders you to immorality, while Allah promises you forgiveness from Him and bounty. And Allah is all-Encompassing and Knowing.” [Surah al-Baqarah]
In Islam, re-marriage of widows has been greatly emphasized. At the same time, it has also been often stated that people, who bring up orphans, are very dear to Allah (Subhanahu wa Ta’ala). This should give a very good idea, as to what is the reward for someone who gets married to a widow and supports her children from her deceased husband.
“A giver of maintenance to the widows and the poor is like a giver in the way of Allah (Subhanahu wa Ta’ala), an utterer of prayers all night and fasting during the day.” (Bukhari)
http://www.muwatta.com/the-believers...f-one-another/