Silsilat al-Ahadith al-Sahihah

It is narrated from Sayyiduna Zaid bin Thabit (may Allah be pleased with him) that the Noble Prophet (peace and blessings of Allah be upon him) said: "Whoever equips a warrior in the path of Allah, he will receive a reward equal to that (which the warrior receives), and whoever looks after the family of a Mujahid in his absence with goodness or spends on his family, he will also receive a reward equal to that (of the Mujahid)."