Aisha (may Allah be pleased with her) narrated that Hind (may Allah be pleased with her) came to the Prophet ﷺ and said: "O Messenger of Allah ﷺ! Abu Sufyan (my husband) is a miserly man. He does not give me enough expenses which are sufficient for me and my children. If I take something from his wealth without his knowledge, will there be any sin upon me?" The Prophet ﷺ said: "You may take in a good manner what is sufficient for you and your children."
Hadith Referenceمسند الإمام الشافعي / كتاب عشرة النساء والإيلاء والخلع / 1209
Hadith Takhrijاخرجه البخاري، النفقات، باب نفقة المرأة اذا غاب عنها زوجها ونفقة الولد (5359) ومسلم، الأقضية، باب قضية هند (1714)۔