Surah Maryam (Mary), Verse 26

فَكُلِیْ وَاشْرَبِیْ وَقَرِّیْ عَیْنًا فَاِمَّا تَرَیِنَّ مِنَ الْبَشَرِ اَحَدًا فَقُوْلِیْۤ اِنِّیْ نَذَرْتُ لِلرَّحْمٰنِ صَوْمًا فَلَنْ اُكَلِّمَ الْیَوْمَ اِنْسِیًّا ۟

Fakulee washrabee wa qarree 'ainaa; fa immaa tarayinnna minal bashari ahadan faqooleee innee nazartu lir Rahmaani sawman falan ukallimal yawma insiyyaa

“"So eat and drink and cool (thine) eye. And if thou dost see any man, say, 'I have vowed a fast to (Allah) Most Gracious, and this day will I enter into not talk with any human being'"”

Quran 19:26 (Yusuf Ali Translation)