Helping those who fight for the cause of Allah

This hadith explains that helping those who fight for the cause of Allah is equivalent to participating in a military expedition. It teaches us that we should help and support those who are fighting for the sake of God, as if we were joining them on their journey. This could be done by providing financial assistance, moral support, or even just being there for them when they need it. The hadith also encourages us to look after the families of fighters, as this too is considered an act of participation in a military expedition. By doing so, we are showing our commitment and dedication to God's cause and helping others along their journey.