From Sahih Muslim (Hadith 4902):
It has been narrated on the authority of Zaid b. Khalid al-Juhani that the Messenger of Allah (ﷺ) said:Anybody who equips a warrior (going to fight) in the way of Allah (is like one who actually) fights. And anybody who looks well after his family in his absence (is also like one who actually) fights
Reference: Muslim 4902