عَنِ ابْنِ عَبَّاسٍ رَضِيَ اللَّهُ عَنْهُمَا قَالَ جَاءَ نَبِيَّ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ رَجُلَانِ حَاجَتُهُمَا وَاحِدَةٌ فَتَكَلَّمَ أَحَدُهُمَا فَوَجَدَ نَبِيُّ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ مِنْ فِيهِ أَخْلَافًا فَقَالَ لَهُ أَلَا تَسْتَاكُ فَقَالَ إِنِّي لَأَفْعَلُ وَلَكِنِّي لَمْ أَطْعَمْ طَعَامًا مُنْذُ ثَلَاثٍ فَأَمَرَ بِهِ رَجُلًا فَآوَاهُ وَقَضَى لَهُ حَاجَتَهُ
Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates that two men came to the Noble Prophet (peace and blessings be upon him); they both had the same need. When one of them spoke, the Prophet (peace and blessings be upon him) noticed an unpleasant odor from his mouth and said: "Do you not use the miswak?" He replied: "Yes, I certainly do, but the fact is that I have not eaten food for three days." Then the Prophet (peace and blessings be upon him) instructed a person, so he took him and fulfilled his need.