Truthfulness and sincerity (sidq)

قَالَ ٱللَّهُ هَـٰذَا يَوْمُ يَنفَعُ ٱلصَّـٰدِقِينَ صِدْقُهُمْ ۚ لَهُمْ جَنَّـٰتٌ تَجْرِى مِن تَحْتِهَا ٱلْأَنْهَـٰرُ خَـٰلِدِينَ فِيهَآ أَبَدًا ۚ رَّضِىَ ٱللَّهُ عَنْهُمْ وَرَضُوا۟ عَنْهُ ۚ ذَٰلِكَ ٱلْفَوْزُ ٱلْعَظِيمُ

Allāh will say, "This is the Day when the truthful will benefit from their truthfulness." For them are gardens [in Paradise] beneath which rivers flow, wherein they will abide forever, Allāh being pleased with them, and they with Him. That is the great attainment.