Man Lā Yaḥḍuruh al-Faqīh
Hadith 7973914 - وَ كَتَبَ أَبُو هَمَّامٍ إِلَى أَبِي اَلْحَسَنِ عَلَيْهِ اَلسَّلاَمُ : فِي رَجُلٍ اِسْتَأْجَرَ ضَيْعَةً مِنْ رَجُلٍ فَبَاعَ اَلْمُؤَاجِرُ تِلْكَ اَلضَّيْعَةَ بِحَضْرَةِ اَلْمُسْتَأْجِرِ وَ لَمْ يُنْكِرِ اَلْمُسْتَأْجِرُ اَلْبَيْعَ وَ كَانَ حَاضِراً لَهُ شَاهِداً عَلَيْهِ فَمَاتَ اَلْمُشْتَرِي وَ لَهُ وَرَثَةٌ هَلْ يَرْجِعُ ذَلِكَ اَلشَّيْءُ فِي مِيرَاثِ اَلْمَيِّتِ أَوْ يَثْبُتُ فِي يَدِ اَلْمُسْتَأْجِرِ إِلَى أَنْ تَنْقَضِيَ إِجَارَتُهُ فَكَتَبَ عَلَيْهِ اَلسَّلاَمُ "يَثْبُتُ فِي يَدِ اَلْمُسْتَأْجِرِ إِلَى أَنْ تَنْقَضِيَ إِجَارَتُهُ".
Hadith.3914 - Abu Hammam wrote to Abu Al-Hasan (as) regarding a man who rented a property from another man. The landlord then sold the property in the presence of the tenant, who did not object to the sale and witnessed it. The buyer later died, leaving heirs. The question was whether the property would revert to the heirs as inheritance or remain with the tenant until the lease period ended.
Imam (as) wrote in response: "It remains in the hands of the tenant until the lease period ends."