Imam Ali (AS) said:

Cherish your family and relatives, because they are your wings and feather which you can fly with them. They are your root and basis whom you will go back to (to get help from them) and they are your helping hands which with them you will attack the enemy (and you will gain victory) [1].

[1] Nahul Balaghah, Letter 31.

Source: en.shafaqna.com