Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrated that the Messenger of Allah (peace and blessings be upon him) said: "By the One in whose hand is my soul, were it not that it would be hard on the believers, I would not stay behind any fighting that is fought in His path; but I do not find enough means to mount them all, nor do they have enough means to follow me, and their hearts are not content to stay behind after I have gone out to fight."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 17822
Sayyiduna Abdullah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "It is sin enough for a person that he neglects those whose sustenance he is responsible for."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 17823
Sayyiduna Abu Hurayrah (may Allah be pleased with him) said: We were sitting with the Messenger of Allah (peace and blessings be upon him) when suddenly a young man appeared from the hills of al-Thaniyyah. When we saw him, we said: If only this young man's youth, vigour and strength were in the path of Allah Almighty! The narrator said: The Messenger of Allah (peace and blessings be upon him) heard what we said and said: "Is being killed in the path of Allah the only 'path of Allah'? Whoever serves his parents is in His path; whoever provides for his family is in the path of Allah Almighty; whoever guards his own self to keep it chaste is also in the path of Allah Almighty; and whoever strives to amass more wealth is on the path of Satan."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 17824