Sura Āl-ʿImrān 3:187

وَإِذْ أَخَذَ ٱللَّـهُ مِيثَٰقَ ٱلَّذِينَ أُوتُوا۟ ٱلْكِتَٰبَ لَتُبَيِّنُنَّهُۥ لِلنَّاسِ وَلَا تَكْتُمُونَهُۥ فَنَبَذُوهُ وَرَآءَ ظُهُورِهِمْ وَٱشْتَرَوْا۟ بِهِۦ ثَمَنًا قَلِيلًا فَبِئْسَ مَا يَشْتَرُونَ

wa-idh akhadha allāhu mīthāqa lladhīna ūtū l-kitāba latubayyinunnahu lil-nāsi wa-lā taktumūnahu fanabadhūhu wa-rāʾa ẓuhūrihim wa-ashtaraw bihi thamanan qalīlan fa-biʾsa mā yashtarūna

And remember Allah took a covenant from the People of the Book, to make it known and clear to mankind, and not to hide it; but they threw it away behind their backs, and purchased with it some miserable gain! And vile was the bargain they made!

Sura al-Nisāʾ 4:94

يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓا۟ إِذَا ضَرَبْتُمْ فِى سَبِيلِ ٱللَّـهِ فَتَبَيَّنُوا۟ وَلَا تَقُولُوا۟ لِمَنْ أَلْقَىٰٓ إِلَيْكُمُ ٱلسَّلَٰمَ لَسْتَ مُؤْمِنًا تَبْتَغُونَ عَرَضَ ٱلْحَيَوٰةِ ٱلدُّنْيَا فَعِندَ ٱللَّـهِ مَغَانِمُ كَثِيرَةٌ كَذَٰلِكَ كُنتُم مِّن قَبْلُ فَمَنَّ ٱللَّـهُ عَلَيْكُمْ فَتَبَيَّنُوٓا۟ إِنَّ ٱللَّـهَ كَانَ بِمَا تَعْمَلُونَ خَبِيرًا

yā-ayyuhā lladhīna āmanū idhā ḍarabtum fī sabīli allāhi fa-tabayyanū wa-lā taqūlū liman alqā ilaykumu l-salāma lasta muʾminan tabtaghūna ʿaraḍa l-ḥayāti l-dunyā fa-ʿinda allāhi maghānimu kathīratun ka-dhālika kuntum min qablu famanna allāhu ʿalaykum fa-tabayyanū inna allāha kāna bi-mā taʿmalūna khabīran

O ye who believe! When ye go abroad in the cause of Allah, investigate carefully, and say not to any one who offers you a salutation: "Thou art none of a believer!" Coveting the perishable goods of this life: with Allah are profits and spoils abundant. Even thus were ye yourselves before, till Allah conferred on you His favours: Therefore carefully investigate. For Allah is well aware of all that ye do.

Sura al-Naḥl 16:44

بِٱلْبَيِّنَٰتِ وَٱلزُّبُرِ وَأَنزَلْنَآ إِلَيْكَ ٱلذِّكْرَ لِتُبَيِّنَ لِلنَّاسِ مَا نُزِّلَ إِلَيْهِمْ وَلَعَلَّهُمْ يَتَفَكَّرُونَ

bil-bayyināti wa-l-zuburi wa-anzalnā ilayka l-dhikrā li-tubayyina lil-nāsi mā nuzzila ilayhim wa-laʿallahum yatafakkarūna

(We sent them) with Clear Signs and Books of dark prophecies; and We have sent down unto thee (also) the Message; that thou mayest explain clearly to men what is sent for them, and that they may give thought.

Sura al-Naḥl 16:64

وَمَآ أَنزَلْنَا عَلَيْكَ ٱلْكِتَٰبَ إِلَّا لِتُبَيِّنَ لَهُمُ ٱلَّذِى ٱخْتَلَفُوا۟ فِيهِ وَهُدًى وَرَحْمَةً لِّقَوْمٍ يُؤْمِنُونَ

wa-mā anzalnā ʿalayka l-kitāba illā li-tubayyina lahumu alladhī akhtalafū fīhi wa-hudan wa-raḥmatan li-qawmin yuʾminūna

And We sent down the Book to thee for the express purpose, that thou shouldst make clear to them those things in which they differ, and that it should be a guide and a mercy to those who believe.

Sura al-Ḥujurāt 49:6

يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓا۟ إِن جَآءَكُمْ فَاسِقٌۢ بِنَبَإٍ فَتَبَيَّنُوٓا۟ أَن تُصِيبُوا۟ قَوْمًۢا بِجَهَٰلَةٍ فَتُصْبِحُوا۟ عَلَىٰ مَا فَعَلْتُمْ نَٰدِمِينَ

yā-ayyuhā lladhīna āmanū in jāʾakum fāsiqun bi-nabaʾin fa-tabayyanū an tuṣībū qawman bi-jahālatin fa-tuṣbiḥū ʿalā mā faʿaltum nādimīna

O ye who believe! If a wicked person comes to you with any news, ascertain the truth, lest ye harm people unwittingly, and afterwards become full of repentance for what ye have done.