Ali Imran 3:41

قَالَ رَبِّ ٱجْعَل لِّىٓ ءَايَةًۭ ۖ قَالَ ءَايَتُكَ أَلَّا تُكَلِّمَ ٱلنَّاسَ ثَلَٰثَةَ أَيَّامٍ إِلَّا رَمْزًۭا ۗ وَٱذْكُر رَّبَّكَ كَثِيرًۭا وَسَبِّحْ بِٱلْعَشِىِّ وَٱلْإِبْكَٰرِ

He said: "O my Lord! Give me a Sign!" "Thy Sign," was the answer, "Shall be that thou shalt speak to no man for three days but with signals. Then celebrate the praises of thy Lord again and again, and glorify Him in the evening and in the morning."