The Prophet ﷺ as saying: Fast is a shield ; when one of you is fasting, he should neither behave in an obscene manner nor foolishly. If a man fights or abuses him, he should say: I am fasting, I am fasting.
أَنَّ النَّبِيَّ ﷺ قَالَ الصِّيَامُ جُنَّةٌ إِذَا كَانَ أَحَدُكُمْ صَائِمًا فَلاَ يَرْفُثْ وَلاَ يَجْهَلْ فَإِنِ امْرُؤٌ قَاتَلَهُ أَوْ شَاتَمَهُ فَلْيَقُلْ إِنِّي صَائِمٌ إِنِّي صَائِمٌ