Surah Al-Hadid 57:19

وَٱلَّذِينَ ءَامَنُوا۟ بِٱللَّهِ وَرُسُلِهِۦٓ أُو۟لَـٰٓئِكَ هُمُ ٱلصِّدِّيقُونَ ۖ وَٱلشُّهَدَآءُ عِندَ رَبِّهِمْ لَهُمْ أَجْرُهُمْ وَنُورُهُمْ ۖ وَٱلَّذِينَ كَفَرُوا۟ وَكَذَّبُوا۟ بِـَٔايَـٰتِنَآ أُو۟لَـٰٓئِكَ أَصْحَـٰبُ ٱلْجَحِيمِ

And those who have believed in Allāh and His messengers - those are [in the ranks of] the supporters of truth and the martyrs, with their Lord. For them is their reward and their light. But those who have disbelieved and denied Our verses - those are the companions of Hellfire.

Translation: Saheeh International

Tafsir

And those who believe in God and His messengers — they are the truthful al-siddīqūna those who go to the greatest lengths to be truthful and the witnesses with their Lord against the deniers of all communities; they will have their reward and their light. …

Excerpt from Tafsir al-Jalalayn, commentary on 57:19, via Quran.com. The reader has the full commentary and 9 more tafsirs.