✅Answer: In Surah Maryam, verse 26, Allah, the Mighty and Exalted, addresses Mary (peace be upon her) and says:

فَكُلِي وَ اشْرَبِي وَ قَرِّي عَيْناً فَإِمَّا تَرَيِنَّ مِنَ الْبَشَرِ أَحَداً فَقُولِي إِنِّي نَذَرْتُ لِلرَّحْمنِ صَوْماً فَلَنْ أُكَلِّمَ الْيَوْمَ إِنْسِيًّا

'So eat and drink and be comforted. And if you see any human being, say: 'Indeed, I have vowed a fast to the Most Gracious, so I will not speak to any human today.''

✅The vow of silence mentioned in the above verse consisted of completely refraining from speaking during the day, which was permissible during the time of Mary (peace be upon her).

However, in the religion of Islam, there is no place for it and it has been declared forbidden:

1 عَنْ زُرَارَةَ عَنْ أَبِي عَبْدِ اللَّهِ فِي حَدِيثٍ قَالَ: وَ لَا صَمْتَ يَوْماً إِلَى اللَّيْلِ.

📚 Al-Faqih, Vol. 2, p. 172

Imam Sadiq (peace be upon him) said in a hadith: 'There is no fasting of silence from day until night!'

2 عَنِ الزُّهْرِيِّ عَنْ عَلِيِّ بْنِ الْحُسَيْنِ فِي حَدِيثٍ قَالَ: وَ صَوْمُ الصَّمْتِ حَرَامٌ.

📚 Al-Faqih, Vol. 2, p. 77

Imam Sajjad (peace be upon him) said in a hadith: 'The fast of silence is forbidden!'

3 عَنْ حَمَّادِ بْنِ عَمْرٍو وَ أَنَسِ بْنِ مُحَمَّدٍ عَنْ أَبِيهِ عَنْ جَعْفَرِ بْنِ مُحَمَّدٍ عَنْ آبَائِهِ فِي وَصِيَّةِ النَّبِيِّ لِعَلِيٍّ قَالَ: وَ لَا صَمْتَ يَوْماً إِلَى اللَّيْلِ إِلَى أَنْ قَالَ وَ صَوْمُ الصَّمْتِ حَرَامٌ.

📚 Al-Faqih, Vol. 4, p. 367

Imam Sadiq (peace be upon him) narrated from his forefathers about the will of the Messenger of Allah (peace and blessings be upon him and his family) to the Commander of the Faithful (peace be upon him) that he said: 'And there is no fasting of silence from day until night (meaning it is not permissible)... up to the point where he said: 'And the fast of silence is forbidden!'

4 عَنْ سَعْدٍ عَنْ مُحَمَّدِ بْنِ الْحُسَيْنِ عَنْ أَبِي الْجَوْزَاءِ عَنِ الْحُسَيْنِ بْنِ عُلْوَانَ عَنْ عَمْرِو بْنِ خَالِدٍ عَنْ زَيْدِ بْنِ عَلِيٍّ عَنْ أَبِيهِ عَنْ عَلِيٍّ قَالَ: قَالَ رَسُولُ اللَّهِ لَيْسَ فِي أُمَّتِي رَهْبَانِيَّةٌ وَ لَا سِيَاحَةٌ وَ لَا زَمٌّ يَعْنِي السُّكُوتَ.

📚 Ma'ani al-Akhbar, p. 173, hadith 1

Ali (peace be upon him) said: The Messenger of Allah (peace and blessings be upon him and his family) said: 'In my Ummah, there is no monasticism (staying in a monastery and separating from the world for worship, like Christian monks) and no wandering (i.e., traveling on earth for worship and monasticism) and no 'zamm' (i.e., silence)!'

5 قَالَ رَسُولُ اللَّهِ شَهْرُ رَمَضَانَ نَسَخَ کُلَّ صَوْمٍ

📚 Tahdhib, Vol. 4, p. 153

The Messenger of Allah (peace and blessings be upon him and his family) said: 'The month of Ramadan has abrogated every other fast!'

✅ The prohibition of the fast of silence is clear in the Shi'a narrations, and according to narration 5, with the coming of the fast of the month of Ramadan, the fasts that were in the previous nations have been lifted, and what has been recommended in the religion of Islam is guarding the tongue from frivolity and various sins of the tongue. Please pay attention to one of these narrations:

5 عَنْ أَبِي بَصِيرٍ قَالَ سَمِعْتُ أَبَا عَبْدِ اللَّهِ يَقُولُ إِنَّ الصِّيَامَ لَيْسَ مِنَ الطَّعَامِ وَ الشَّرَابِ وَحْدَهُ إِنَّ مَرْيَمَ قَالَتْ إِنِّي نَذَرْتُ لِلرَّحْمنِ صَوْماً أَيْ صَمْتاً فَاحْفَظُوا أَلْسِنَتَكُمْ وَ غُضُّوا أَبْصَارَكُمْ وَ لَا تَنَازَعُوا وَ لَا تَحَاسَدُوا فَإِنَّ الْحَسَدَ يَأْكُلُ الْإِيمَانَ كَمَا تَأْكُلُ النَّارُ الْحَطَبَ.

📚 Al-Kafi, Vol. 4, p. 89

Abu Basir said: I heard Imam Sadiq (peace be upon him) say: 'Indeed, fasting is not only from eating and drinking. Indeed, Mary (peace be upon her) said: 'I have vowed a fast to the Most Gracious,' and she meant silence, so (during fasting) guard your tongues and lower your eyes (from what is forbidden) and do not quarrel or argue with each other and do not envy one another, for indeed envy consumes faith just as fire consumes wood!'

اللَّهُمَّ صَلِّ عَلَی مُحَمَّدٍ وَ آلِ مُحَمَّدٍ

وَ عَجِّلْ لِوَلِیِّکَ الْفَرَجَ وَ الْعَافِیَةَ وَ النَّصْرَ