The term taqiyya (تقیة) the root of this word literally means "caution, fear", "prudence, guarding against (a danger)", "carefulness, wariness". It can be used synonymously with the terms tuqa(n), tuqāt, taqwā and ittiqāʾ, derived from the same root. These terms also have other meanings. For example, the term taqwa generally means "piety"( fear [of God]) in an Islamic context.
A related term is kitmān (كتمان)– the "action of covering, dissimulation". While the terms taqiyya and kitmān may be used synonymously, kitmān refers specifically to the concealment of one's convictions by silence or omission. Kitman derives from the Arabic word 'katama', which is defined as, 'to conceal, to hide'.
Some Muslims used kitmān to conceal their Muslim beliefs in the face of persecution by their enemies.
The view of Shia scholars is that taqiyyah is disallowed only in the case of necessity such as fear of death and in other situationsit is not permitted. But in the situation that Islam is in danger it is not allowed
That is, if at some point Islam and religious teachings may be endangered by hiding the truth, human life is no longer important and one should not practice taqiyyah, even though he may be killed to protect his religion, there is no problem because he was martyred in the way of God. But if in normal conditions, a Muslim's life is in danger because of his beliefs, he can hide it.
We have Taqiyyah in Quran:
ا يَتَّخِذِ الْمُؤْمِنُونَ الْكَافِرِينَ أَوْلِيَاءَ مِنْ دُونِ الْمُؤْمِنِينَ ۖ وَمَنْ يَفْعَلْ ذَٰلِكَ فَلَيْسَ مِنَ اللَّهِ فِي شَيْءٍ إِلَّا أَنْ تَتَّقُوا مِنْهُمْ تُقَاةً ۗ وَيُحَذِّرُكُمُ اللَّهُ نَفْسَهُ ۗ وَإِلَى اللَّهِ الْمَصِيرُ(آل عمران:۲۸)
The faithful should not take the faithless for allies instead of the faithful, and Allah will have nothing to do with those who do that, except when you are wary of them, out of caution. Allah warns you to beware of [disobeying] Him, and toward Allah is the return.
Allah says in this Verse:
you should guard yourselves against them, guarding carefully for saving your life.
In the other verse, Allah says:
مَنْ كَفَرَ بِاللَّهِ مِنْ بَعْدِ إِيمَانِهِ إِلَّا مَنْ أُكْرِهَ وَقَلْبُهُ مُطْمَئِنٌّ بِالْإِيمَانِ وَلَٰكِنْ مَنْ شَرَحَ بِالْكُفْرِ صَدْرًا فَعَلَيْهِمْ غَضَبٌ مِنَ اللَّهِ وَلَهُمْ عَذَابٌ عَظِيمٌ(نحل:۱۰۶)
Any one who, after accepting faith in Allah, utters Unbelief,- except under compulsion, his heart remaining firm in Faith - but such as open their breast to Unbelief, on them is Wrath from Allah, and theirs will be a dreadful Penalty.
This verse was revealed about Ammar Yasir. When the polytheists in Makkah subjected him to all kinds of torment and torture and forced him to return from the religion of the Messenger of God, may God bless him and grant him peace, they say: They hung him in a well so that he would speak disbelief. Ammar had to express disbelief at such a time when his heart was confident and full of faith. Then he came to the Messenger of God, peace and blessings of God be upon him, crying. The Prophet said: O Ammar, is your heart full of faith or not? Ammar said: Yes, O Messenger of God, with complete certainty, my heart is full of faith, then this verse was revealed.
وَقَالَ رَجُلٌ مُؤْمِنٌ مِنْ آلِ فِرْعَوْنَ يَكْتُمُ إِيمَانَهُ أَتَقْتُلُونَ رَجُلًا أَنْ يَقُولَ رَبِّيَ اللَّهُ وَقَدْ جَاءَكُمْ بِالْبَيِّنَاتِ مِنْ رَبِّكُمْ(غافر:۲۸)
Said a man of faith from Pharaoh’s clan, who concealed his faith, ‘Will you kill a man for saying, ‘‘My Lord is Allah,’’ while he has already brought you manifest proofs from your Lord?
As a result, taqiyyah seems to be a religious and rational act.
Only Taqiyyah is forbidden in the place where taqiyya causes corruption in the religion and creates innovation in it in this situation we should leave it.
