Messenger of Allah ﷺ 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."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ الأَعْمَالُ بِالنِّيَّةِ وَلِكُلِّ امْرِئٍ مَا نَوَى فَمَنْ كَانَتْ هِجْرَتُهُ إِلَى اللَّهِ وَرَسُولِهِ فَهِجْرَتُهُ إِلَى اللَّهِ وَرَسُولِهِ وَمَنْ كَانَتْ هِجْرَتُهُ لِدُنْيَا يُصِيبُهَا أَوِ امْرَأَةٍ يَتَزَوَّجُهَا فَهِجْرَتُهُ إِلَى مَا هَاجَرَ إِلَيْهِ  

The Prophet ﷺ 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.  

عَنِ النَّبِيِّ ﷺ قَالَ إِذَا أَنْفَقَ الرَّجُلُ عَلَى أَهْلِهِ يَحْتَسِبُهَا فَهُوَ لَهُ صَدَقَةٌ  

Messenger of Allah ﷺ 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."  

أَنَّهُ أَخْبَرَهُ أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ إِنَّكَ لَنْ تُنْفِقَ نَفَقَةً تَبْتَغِي بِهَا وَجْهَ اللَّهِ إِلَّا أُجِرْتَ عَلَيْهَا حَتَّى مَا تَجْعَلُ فِي فَمِ امْرَأَتِكَ