Arabic (Original)
قَالَ حَدَّثَنَا أَسْبَاطُ بْنُ مُحَمَّدٍ قَالَ حَدَّثَنَا الْأَعْمَشُ عَنِ أَبِي صَالِحٍ عَنِ أَبِي هُرَيْرَةَ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا كَانَ يَوْمٌ يَصُومُهُ أَحَدُكُمْ فَلَا يَرْفُثْ وَلَا يَجْهَلْ فَإِنْ جُهِلَ عَلَيْهِ فَلْيَقُلْ إِنِّي امْرُؤٌ صَائِمٌ.
English Translation
[Ahmad] said: Asbat ibn Muhammad told us, who said: al-A'mash told us, from Abu Salih, from Abu Hurayrah, who said: The Messenger of Allah (peace and blessings be upon him) said: "When it is a day one of you is fasting, let him not speak obscenely nor act ignorantly; and if someone acts ignorantly toward him, let him say: 'I am a fasting person.'"