The hand which gives is the higher hand. Start with those for whom you are responsible: your mother, your father, your sister, your brother, then the closest in kin and the closest in kin
Authentic hadithعن طارق المُحَارِبِيِّ، قال: قَدِمْنَا المدينة فإذا رسول الله صلى الله عليه وسلم قَائِمٌ على المِنْبَرِ يَخْطُبُ النَّاسَ وهو يقول: "يَدُ الْمُعْطِي الْعُلْيَا، وَابْدَأْ بِمَنْ تَعُولُ: أُمَّكَ وأَبَاكَ، وأُخْتَكَ وأَخَاكَ، ثُمَّ أَدْنَاكَ أَدْنَاكَ".
Tāriq al-Muhāribi (may Allah be pleased with him) reported: We came to Madīnah when the Messenger of Allah (may Allah's peace and blessings be upon him) was standing on the pulpit addressing people and saying: "The hand which gives is the higher hand. Start with those for whom you are responsible: your mother, your father, your sister, your brother, and then the closest in kin and the closest in kin."
Explanation
This Hadīth indicates that one's hand should be higher; meaning that he should spend munificently as much as he can afford and refrain from asking others to give him money. Spending makes one's hand higher. Also, one should spend first on his relatives and help them with his money to the best of his abilities. In this respect, one should start with the most important, such as one's mother, who is to be given priority over one's father, and one's sister is to be given priority over one's brother. The closest in kin are to be considered as well, if they do not have enough resources.
Source · An-Nasaa’i
From the Hadith Encyclopedia (hadeethenc.com).