Hadithcore
Riyad as-Salihin, 1240

Abu Hurairah (May Allah be pleased with him) reported:

The Messenger of Allah (ﷺ) said, "When any one of you is observing Saum (fasting) on a day, he should neither indulge in obscene language nor should he raise the voice; and if anyone reviles him or tries to quarrel with him he should say: 'I am observing fast."' <b>[Al-Bukhari and Muslim]</b>.

عن أبي هريرة رضي الله عنه قال‏:‏ قال رسول الله صلى الله عليه وسلم‏:‏ ‏

‏إذا كان يوم صوم أحدكم فلا يرفث ولا يصخب، فإن سابه أحد أو قاتله، فليقل‏:‏ إني صائم‏

References1 variant
In-Book Reference
Book 8, Hadith 250
Sharh · explanationclick to expand
<b>Guidance from the Hadith:</b><br> 1) Fasting is a spiritual and educational act of worship. Over the course of a whole month, a person adheres to worship and obedience and abandons sins, which disciplines his soul.<br> 2) It teaches people to abide by the limits set by the Shariah and not to transgress them due to the folly of the ignorant.<br> 3) A person may inform others of an act of worship he is engaged in, if this brings about some benefit or wards off some evil.<br> 4) The believer does not respond to evil with evil, given his dignity among people and his complete humility before his Lord. So, when he refrains from harming others, he thus submits and stands in humble servitude before his Lord. This is not weakness or humiliation before others.