قالَ رَبِّ اجعَل لي آيَةً ۖ قالَ آيَتُكَ أَلّا تُكَلِّمَ النّاسَ ثَلاثَةَ أَيّامٍ إِلّا رَمزًا ۗ وَاذكُر رَبَّكَ كَثيرًا وَسَبِّح بِالعَشِيِّ وَالإِبكارِ

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."