Sayyidah Aishah (may Allah be pleased with her) said that Hind, the mother of Mu'awiyah (may Allah be pleased with her), came to the Messenger of Allah (peace and blessings be upon him) and said: "Abu Sufyan is a stingy man; he does not give us full maintenance, but we take something without his knowing. Is there any sin in that?" He (peace and blessings be upon him) said: "Take, in a fair manner, as much as suffices you."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب آداب القاضي / 20489