“Whatever it be that you spend, He replaces it and he is the best of providers.”
(Quran)

Abu Masood (radiyallahu ta’ala anhu) narrates that the Prophet (salallahu ‘alahi wasallam) said: “When a man spends anything on his family and he expects to be rewarded for it is a charity in his favour.”
[(ukhari)

Abu Umaamah (radiyallahu ta’ala anhu) narrates that the Prophet (salallahu ‘alahi wasallam) said: “He who spends anything on himself in order to abstain thereby, it is a charity. He who spends on his wife, children and members of his household, it is a charity.”
(Tabarani)

Al Miqdam Ibn Madikarba (radiyallahu ta’ala anhu) narrates that the Prophet (salallahu ‘alahi wasallam) said: “What you feed yourself is a charity in your favour, what you spend on your wife is a charity in your favour, what you spend on your husband is a charity in your favour.”
(Ahmad)

Jabir bin Abdullah (radiyallahu ta’ala anhu) narrates that the Prophet (salallahu ‘alahi wasallam) said: “The first thing to be placed on the scales of a person on the day of Qiyamah shall be his spending on his family.
(Tabarani)

Abu Hurairah (radiyallahu ta’ala anhu) narrates that the Prophet (salallahu ‘alahi wasallam) said: “A dinar which you spend in the cause of Allah Ta’ala, a dinar which you spend to free a slave, a dinar which you give to a poor person, a dinar which you spend on your family, the greatest in reward is the one which you spend on your family.”
(Muslim)

Thauban (radiyallahu ta’ala anhu) narrates that the Prophet (salallahu ‘alahi wasallam) said: “The most superior dinar which a man spends is the dinar which he spends on his family, the dinar which he spends on his animal in the cause of Allah Ta’ala and the dinar which he spends on his on his companions in the cause of Allah Ta’ala.
(Muslim)

Abu Qilabah (radiyallahu ta’ala anhu) Said that Rasulullah (salallahu ‘alahi wasallam) commenced with the family, Abu Qilabah then said which person can receive a greater reward then the man who spends on his little children so Allah Ta’ala may make them self-sufficient, or Allah Ta’ala may benefit them thereby, or he may make them independent.
(Muslim)

Saad Ibn Abi Waqqas (radiyallahu ta’ala anhu) narrates that Rasulullah (salallahu ‘alahi wasallam) said to him, you will never spend anything seeking therewith the pleasure of Allah Ta’ala without being rewarded for it so much, that even the food that you place in your wife’s mouth.
(Bukhari)

Ka’ab bin Ujrah (radiyallahu ta’ala anhu) narrates that a man passed by the Prophet (salallahu ‘alahi wasallam) and on seeing this person’s strength and his energetic nature the companions of Rasulullah said, Oh Rasulullah, What if this person was in the path of Allah Ta’ala. Rasulullah replied that if he left for work so that he can support his small children then he is in the path of Allah Ta’ala. If he left for work to benefit himself so that he can become self-sufficient then he is in the path of Allah Ta’ala, if he left to support his old parents then he is in the path of Allah Ta’ala, if he left out of show and pride he is in the path of Shaytaan.
(Tabarani)