The Prophet (peace and blessings be upon him) says:
After mindfulness of Allah, a believer gains nothing better for himself than a pious wife who obeys him when he commands her and pleases him when he looks at her. When he asks her to carry out a task, she is true to him and when he is away she protects her chastity as well as her husband’s property.” (Ibn Maja, Nikah, 5/1857)
A good wife is the one who obeys her husband and is compassionate to her children.
“The whole world is providence and the best provision of the world is a pious woman.” (Muslim, Kitab al- Rada, 64; See also: Nasa`i, Nikah, 15; Ibn Maja, Nikah, 5)
Thawban (may Allah be pleased with him) narrates:
When the verse “…and (as for) those who hoard up gold and silver and do not spend it in Allah’s way, announce to them a painful chastisement” (9:34) was revealed, we were with the Prophet (peace and blessings be upon him) on an expedition. Some of the Companions said that now that we knew the ruling about gold and silver [we would no longer hoard them, but give them in charity]. We wished we knew what is good for us, so that we could accumulate that instead. Upon hearing this, the Messenger of Allah (peace and blessings be upon him) said, “The most valuable possessions are a tongue that mentions the names of Allah, a thankful heart and a wife who strengthens the faith of her husband.” (Tirmi- dhi, Tafsir, 9/9)