3270 - وَ رَوَى أَبَانٌ عَنْ مُحَمَّدِ بْنِ مُسْلِمٍ عَنْ أَبِي جَعْفَرٍ عَلَيْهِ اَلسَّلاَمُ : فِي اَلرَّجُلِ يَكُونُ عَلَيْهِ دَيْنٌ إِلَى أَجَلٍ مُسَمًّى فَيَأْتِيهِ غَرِيمُهُ وَ يَقُولُ لَهُ اُنْقُدْ لِي مِنَ اَلَّذِي لِي كَذَا وَ كَذَا وَ أَضَعُ لَكَ بَقِيَّتَهُ أَوْ يَقُولُ اُنْقُدْ لِي بَعْضاً وَ أَمُدُّ لَكَ فِي اَلْأَجَلِ فِيمَا بَقِيَ فَقَالَ "لاَ أَرَى بِهِ بَأْساً مَا لَمْ يَزِدْ عَلَى رَأْسِ مَالِهِ شَيْئاً يَقُولُ اَللَّهُ عَزَّ وَ جَلَّ: فَلَكُمْ رُؤُسُ أَمْوٰالِكُمْ لاٰ تَظْلِمُونَ وَ لاٰ تُظْلَمُونَ ".
Hadith.3270 - Aban narrated from Muhammad ibn Muslim, who reported from Abu Jafar Imam Muhammad ibn Ali Al-Baqir 
regarding a man who owes a debt with a specified due date.
The creditor comes to him and says, "Pay me such-and-such amount from what you owe, and I will waive the rest," or says, "Pay me a part now, and I will extend the deadline for the remainder."
Imam said: "I see no harm in it, as long as nothing is added to the principal amount."
Allah (swt), the Almighty, says: 'Then you shall have your principal; you shall not wrong, nor shall you be wronged.' (Surah Al-Baqarah, 2:279)"
