قَالَ رَبِّ اجْعَل لِّيَ آيَةً قَالَ آيَتُكَ أَلاَّ تُكَلِّمَ النَّاسَ ثَلاَثَةَ أَيَّامٍ إِلاَّ رَمْزًا وَاذْكُر رَّبَّكَ كَثِيرًا وَسَبِّحْ بِالْعَشِيِّ وَالإِبْكَارِ
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سورة آل عمران
(3/41) (Zachariah) said: “My Lord! Make a sign for me”. (Allah) said: “Your sign is that you shall not speak to people for three days except with signals. And remember (repeat the Name of) your Lord much and glorify (Him) night and day”.
Surah Al Imran