"The Prophet borrowed forty thousand from me, then some wealth came to him, and he paid me back and said: 'May Allah bless your family and your wealth for you: the reward for lending is praise and repayment." (Using translation from Nasāʾī 4683)  

اسْتَقْرَضَ مِنِّي النَّبِيُّ ﷺ أَرْبَعِينَ أَلْفًا فَجَاءَهُ مَالٌ فَدَفَعَهُ إِلَيَّ وَقَالَ «بَارَكَ اللهُ لَكَ فِي أَهْلِكَ وَمَالِكَ إِنَّمَا جَزَاءُ السَّلَفِ الْحَمْدُ وَالْأَدَاءُ»