Quran 19:26 Maryam, ayah 26 of 98

فَكُلِى وَٱشْرَبِى وَقَرِّى عَيْنًا ۖ فَإِمَّا تَرَيِنَّ مِنَ ٱلْبَشَرِ أَحَدًا فَقُولِىٓ إِنِّى نَذَرْتُ لِلرَّحْمَـٰنِ صَوْمًا فَلَنْ أُكَلِّمَ ٱلْيَوْمَ إِنسِيًّا ۝٢٦

19:26 So eat and drink and be consoled. And if thou meetest any mortal, say: Lo! I have vowed a fast unto the Beneficent, and may not speak this day to any mortal.