Narrated Zaid bin Khalid: Allah's Apostle said, " He who pre pares a Ghazi going in Allah's Cause is given a reward equal to that of) a Ghazi; and he who looks after properly the dependents of a Ghazi going in Allah's Cause is (given a reward equal to that of) Ghazi."
— Sahih Bukhari, Volume 4, Book 52: Fighting for the Cause of Allah (Jihaad), Hadith #96