The Messenger of Allah ﷺ as saying: If anyone does not abandon falsehood and action is accordance with it, Allah has no need that he should abandon his food and drink. The narrator Ahmad (b. Yunus) said: I learnt the chain of narrators from Ibn Abi Dhi'b, and a man by his side made me understand the tradition. I think he was his cousin.  

قَالَ رَسُولُ اللَّهِ ﷺ مَنْ لَمْ يَدَعْ قَوْلَ الزُّورِ وَالْعَمَلَ بِهِ فَلَيْسَ لِلَّهِ حَاجَةٌ أَنْ يَدَعَ طَعَامَهُ وَشَرَابَهُ قَالَ أَحْمَدُ فَهِمْتُ إِسْنَادَهُ مِنَ ابْنِ أَبِي ذِئْبٍ وَأَفْهَمَنِي الْحَدِيثَ رَجُلٌ إِلَى جَنْبِهِ أُرَاهُ ابْنَ أَخِيهِ  

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