Bukhari

Narrated 'Umar bin Al-Khattab: Allah's Apostle said, "The reward of deeds depends upon the intention and every person will get the reward according to what he has intended. So whoever emigrated for Allah and His Apostle, then his emigration was for Allah and His Apostle. And whoever emigrated for worldly benefits or for a woman to marry, his emigration was for what he emigrated for."

Thus, in action are included faith, ablution, prayer, zakat, Hajj, fasting, and all the commands. And (in Surah Bani Isra'il) Allah said: O Prophet! Say that everyone acts according to his own way, that is, his own intention. And (because of this) if a person, with the intention of reward and understanding it as Allah's command, spends on his family, then he also receives the reward of charity for it. And when Makkah was conquered, the Noble Prophet (peace and blessings be upon him) said that (now the series of migration has ended), but the series of jihad and intention remains.

Thus, in action are included faith, ablution, prayer, zakat, Hajj, fasting, and all the commands. And (in Surah Bani Isra'il) Allah said: O Prophet! Say that everyone acts according to his own way, that is, his own intention. And (because of this) if a person, with the intention of reward and understanding it as Allah's command, spends on his family, then he also receives the reward of charity for it. And when Makkah was conquered, the Noble Prophet (peace and blessings be upon him) said that (now the series of migration has ended), but the series of jihad and intention remains.

Narrated 'Umar bin Al-Khattab: Allah's Apostle said, "The reward of deeds depends upon the intention and every person will get the reward according to what he has intended. So whoever emigrated for Allah and His Apostle, then his emigration was for Allah and His Apostle. And whoever emigrated for worldly benefits or for a woman to marry, his emigration was for what he emigrated for."

Narrated Abu Mas'ud: The Prophet said, "If a man spends on his family (with the intention of having a reward from Allah) sincerely for Allah's sake then it is a (kind of) alms-giving in reward for him.

Narrated Sa'd bin Abi Waqqas: Allah's Apostle said, "You will be rewarded for whatever you spend for Allah's sake even if it were a morsel which you put in your wife's mouth."