“When anyone of you is fasting, let him not utter evil or ignorant speech. If anyone speaks to him in an ignorant manner, let him say: ‘I am fasting.’” (Using translation from Ibn Mājah 1691)
النَّبِيِّ ﷺ قَالَ إِذَا كَانَ يَوْمُ صَوْمِ أَحَدِكُمْ فَلَا يَرْفُثْ وَلَا يَجْهَلْ فَإِنْ جُهِلَ عَلَيْهِ فَلْيَقُلْ إِنِّي امْرُؤٌ صَائِمٌ