NASAI-KUBRA 5252:
from ʿUmayr b. Saʿīd al-Nakhaʿī —
If I carried out the hadd punishment on a man and he died, I would not feel upset, except in the case of khamr; if (such a man) died, I would pay the diyah (to his family) because the Messenger of Allah ﷺ did not prescribe it (did not specify a particular number of lashes). (Using translation from Aḥmad 1024)
الكبرى للنسائي ٥٢٥٢:
عن عمير بن سعيد النخعي —
قَالَ عَلِيٌّ مَا مِنْ رَجُلٍ أَقَمْتُ عَلَيْهِ حَدًّا فَمَاتَ فَأَجِدُ فِي نَفْسِي إِلَّا الْخَمْرَ فَإِنَّهُ إِنْ مَاتَ فِيهِ وَدَيْتُهُ أَنَّ رَسُولَ اللهِ ﷺ «لَمْ يَسُنَّهُ»