Anas reported: When they liberated Tustar, they found a man with a long nose in a coffin. The people were seeking victory and seeking rain through him. Abu Musa wrote to Umar ibn al-Khattab, may Allah be pleased with him, about that. Umar wrote back, saying, “Indeed, this man is one of the prophets. Fire and earth do not consume the bodies of the prophets.” Umar wrote further, “Look for him, you and your companion, and bury him in a place no one knows but the two of you.” Anas said, “Then I went with Abu Musa and we reburied him.”
Source: Muṣannaf Ibn Abī Shaybah 33819
عَنْ أَنَسٍ أَنَّهُمْ لَمَّا فَتَحُوا تُسْتَرَ فَوَجَدَ رَجُلًا أَنْفُهُ ذِرَاعٌ فِي التَّابُوتِ كَانُوا يَسْتَظْهِرُونَ وَيَسْتَمْطِرُونَ بِهِ فَكَتَبَ أَبُو مُوسَى إِلَى عُمَرَ بْنِ الْخَطَّابِ رضي الله عنه بِذَلِكَ فَكَتَبَ عُمَرُ إِنَّ هَذَا نَبِيٌّ مِنَ الْأَنْبِيَاءِ وَالنَّارُ لَا تَأْكُلُ الْأَنْبِيَاءَ وَالْأَرْضُ لَا تَأْكُلُ الْأَنْبِيَاءَ فَكَتَبَ أَنِ انْظُرْ أَنْتَ وَأَصْحَابُكَ فَادْفِنُوهُ فِي مَكَانٍ لَا يَعْلَمُهُ أَحَدٌ غَيْرُكُمَا قَالَ فَذَهَبْتُ أَنَا وَأَبُو مُوسَى فَدَفَنَّاهُ
33819 مصنف ابن أبي شيبة كتاب التأريخ ما ذكر في تستر