Ali 'Imran 3:41

قَالَ رَبِّ ٱجۡعَل لِّيٓ ءَايَةٗۖ قَالَ ءَايَتُكَ أَلَّا تُكَلِّمَ ٱلنَّاسَ ثَلَٰثَةَ أَيَّامٍ إِلَّا رَمۡزٗاۗ وَٱذۡكُر رَّبَّكَ كَثِيرٗا وَسَبِّحۡ بِٱلۡعَشِيِّ وَٱلۡإِبۡكَٰرِ 41

He said, "My Lord, make for me a sign." He Said, "Your sign is that you will not [be able to] speak to the people for three days except by gesture. And remember your Lord much and exalt [Him with praise] in the evening and the morning