It was narrated from Mihjan the freed slave of `Uthman, that `Uthman said: I heard the Messenger of Allah (ﷺ) say: “Allah will shade with His shade on the Day when there is no shade but His a person who gave more time to a debtor who was in difficulty or waived a debt for one who had a lot of debts.`
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا عَبْد اللَّهِ، حَدَّثَنِي أَبُو يَحْيَى الْبَزَّازُ، مُحَمَّدُ بْنُ عَبْدِ الرَّحِيمِ حَدَّثَنَا الْحَسَنُ بْنُ بِشْرِ بْنِ سَلْمٍ الْكُوفِيُّ، حَدَّثَنَا الْعَبَّاسُ بْنُ الْفَضْلِ الْأَنْصَارِيُّ، عَنْ هِشَامِ بْنِ زِيَادٍ الْقُرَشِيِّ، عَنْ أَبِيهِ، عَنْ مِحْجَنٍ، مَوْلَى عُثْمَانَ عَنْ عُثْمَانَ، قَالَ سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ أَظَلَّ اللَّهُ عَبْدًا فِي ظِلِّهِ يَوْمَ لَا ظِلَّ إِلَّا ظِلُّهُ أَنْظَرَ مُعْسِرًا أَوْ تَرَكَ لِغَارِمٍ.
sunnah.com