Narrated Zaid bin Khalid Al-Juhani: That the Messenger of Allah (ﷺ) said, "Whoever prepares a fighter in Allah's cause, he has participated in a military expedition, and whoever looks after the family of a fighter, he has participated in a military expedition." [Abu 'Eisa said:] This Hadith is Hasan Sahih, and it has been reported through more than one route

English translation · Jami' at-Tirmidhi