Where there is no fixed judgement, the traditions and conventions of community are to be referred
حَدَّثَنَا أَبُو نُعَيْمٍ، حَدَّثَنَا سُفْيَانُ، عَنْ هِشَامٍ، عَنْ عُرْوَةَ، عَنْ عَائِشَةَ ـ رضى الله عنها ـ قَالَتْ هِنْدٌ أُمُّ مُعَاوِيَةَ لِرَسُولِ اللَّهِ صلى الله عليه وسلم إِنَّ أَبَا سُفْيَانَ رَجُلٌ شَحِيحٌ، فَهَلْ عَلَىَّ جُنَاحٌ أَنْ آخُذَ مِنْ مَالِهِ سِرًّا قَالَ " خُذِي أَنْتِ وَبَنُوكِ مَا يَكْفِيكِ بِالْمَعْرُوفِ ".
Narrated `Aisha: Hind, the mother of Mu'awiya said to Allah's Messenger, "Abu Sufyan (her husband) is a miser. Am I allowed to take from his money secretly?" The Prophet (ﷺ) said to her, "You and your sons may take what is sufficient reasonably and fairly."