Saad bin Waqqas (raziALLAHU anhu) bayan krte he ki Nabi Sallallahu Alehi Wasallam ne farmaya 

'jo kuch tum ALLAH ko khush karne ke lie kharch karoge uska tumhe sawab milega, 


yahan tak ki (sawab ki niyat se) agar apni Biwi ke munh (mouth) me luqma bhi daloge (to is par bhi sawab milega).


Sahi Bukhari, bab.41,Kitabul Eimaan, Hadith no.56.