Judgment belong to God. We only know it will be true justice.
No one on earth can be sure what will happen. One must try their best to attain purification by investigation with sincerity.

If something is not Prohibited in reality and someone through fair effort comes to the conclusion that it actually is, then going against it is something which inculcates hypocrisy. Since here that matter at hand was not something actually prohibited, so at the end, it won’t prove detrimental to the individual ethically speaking, but the same attuitude of hypocrisy can spill into any other matter which can lead one to commit a prohibited act because of the same hypocrisy and hence resulting accountability.

The same attitude was criticized in Quran where Muslims used to think that having intimate relation with their spouse during nights of Ramdhan was prohibited (under influence of Jews) and yet they betrayed that; and Quran emphasized that God could’ve held them accountable for this deception but instead He forgave them. Probable reason being since such an act was not a sin or ethical violation in reality. But nevertheless, Quran rebuked this kind of attitude.

أُحِلَّ لَكُمْ لَيْلَةَ الصِّيَامِ الرَّفَثُ إِلَى نِسَآئِكُمْ هُنَّ لِبَاسٌ لَّكُمْ وَأَنتُمْ لِبَاسٌ لَّهُنَّ عَلِمَ اللّهُ أَنَّكُمْ كُنتُمْ تَخْتانُونَ أَنفُسَكُمْ فَتَابَ عَلَيْكُمْ وَعَفَا عَنكُمْ فَالآنَ بَاشِرُوهُنَّ وَابْتَغُواْ مَا كَتَبَ اللّهُ لَكُمْ وَكُلُواْ وَاشْرَبُواْ حَتَّى يَتَبَيَّنَ لَكُمُ الْخَيْطُ الأَبْيَضُ مِنَ الْخَيْطِ الأَسْوَدِ مِنَ الْفَجْرِ ثُمَّ أَتِمُّواْ الصِّيَامَ إِلَى الَّليْلِ وَلاَ تُبَاشِرُوهُنَّ وَأَنتُمْ عَاكِفُونَ فِي الْمَسَاجِدِ تِلْكَ حُدُودُ اللّهِ فَلاَ تَقْرَبُوهَا كَذَلِكَ يُبَيِّنُ اللّهُ آيَاتِهِ لِلنَّاسِ لَعَلَّهُمْ يَتَّقُونَ

[Since you want to ask this, let Me answer this that] it has been made lawful for you to lie with your wives in the nights of the fast; they are a garment to you as you are to them. God knew that you were deceiving yourselves [39]. He has relented towards you and pardoned you [40]. Therefore, [without any hesitation] you may now lie with them and [without any hesitation] seek what [result] God has ordained for you. And eat and drink until the white thread of the dawn is totally evident to you from the black thread of night. Then complete the fast till nightfall and do not lie with them [even at night] when you are stationed for itikaf in the mosques. These are the bounds set by God: so do not go near them. Thus He makes known His revelations to mankind that they may attain piety. (Quran 2:187)

(Excerpt from Quranic Exegesis: Javed Ahmed Ghamidi)

(Translated by Dr. Shehzad Saleem)

__

[39]. The implication is that in spite of being of the view that it was not permissible for them to go near their wives in the nights of Ramadan, they were defying their own view. One reason for this view could have been that among the Jews, the next fast would start right after one had broken his fast and they would consider eating and drinking and having sexual intercourse with the wife as prohibited. Muslims thought that they too would have to follow the Jews in this matter. However, some of the Muslims in spite of thinking so deviated from the view they held. This is something which the Quran called deceiving one’s conscience, which is a self evident reality. If a person considers something to be a requisite of religion and still does not act according to it regardless of the fact that it is actually a requisite or not, then this is not permissible to him and would be called deceiving one’s conscience.

[40]. This deception could have earned them the wrath of God but the Almighty mercifully pardoned them.

https://youtu.be/y19FnUs4Me4