Does seeking help from relatives other than one's parents contradict the self-sufficiency mentioned in the Hadith: "He has succeeded who has embraced Islam and whose livelihood is just sufficient, and whom Allah has made content with what He has given him"?

Al-Kafaf is that which is sufficient for one's needs, without excess. Asking without necessity is forbidden by Sharia and naturally reprehensible. Begging is not permissible except for three types of people: one afflicted by dire poverty, one burdened by crippling debt, or one struck by a calamity. Seeking sustenance from creation makes one subservient to it, unlike seeking it from the Creator.