For the lender, when repaying a loan
For the lender, when repaying a loan: 1 supplication in Arabic with English translation and sources, from the Fortress of the Muslim (Hisn al-Muslim).
الدعاء لمن أقرض عند القضاء
بارَكَ اللَّهُ لَكَ فِي أَهْلِكَ وَمَالِكَ، إِنَّمَا جَزَاءُ السَّلَفِ الْحَمْدُ وَالأَدَاءُ.
May Allah bless you in your family and your wealth. The reward for a loan is praise and repayment.
Fortress of the Muslim (Hisn al-Muslim), Sa‘id ibn ‘Ali al-Qahtani. MushafPlus translation made from the Arabic, not reviewed by a specialist.