قَالَ عَلِيَّ بْنَ أَبِي طَالِبٍ رَضِيَ اللَّهُ عَنْهُ: أَشَدُّ الْأَعْمَالِ ثَلَاثَةٌ: إِعْطَاءُ الْحَقِّ مِنْ نَفْسِكَ، وَذِكْرُ اللهِ عَلَى كُلِّ حَالٍ، وَمُوَاسَاةُ الْأَخِ فِي الْمَال

‘Alī bin Abī Ṭālib (may Allāh be pleased with him) said:

“The most difficult deeds to carry out are three: Giving the people their rights that are due upon you, remembering Allāh in all situations, and to help your brother with your wealth.”

• Ḥilyatul Awliyā’ (1/85)