وَ قَالَ عَمَّارُ بْنُ مُوسَى السَّابَاطِيُ قُلْتُ لِأَبِي عَبْدِ اللَّهِ ع- مَا تَقُولُ فِي قَوْمٍ كَانُوا فِي سَفَرٍ لَهُمْ يَمْشُونَ عَلَى سَاحِلِ الْبَحْرِ فَإِذَا هُمْ بِرَجُلٍ مَيِّتٍ عُرْيَانٍ قَدْ لَفَظَهُ الْبَحْرُ وَ هُمْ عُرَاةٌ لَيْسَ مَعَهُمْ إِلَّا إِزَارٌ فَكَيْفَ يُصَلُّونَ عَلَيْهِ وَ هُوَ عُرْيَانٌ وَ لَيْسَ مَعَهُمْ فَضْلُ ثَوْبٍ يُكَفِّنُونَهُ بِهِ قَالَ يُحْفَرُ لَهُ وَ يُوضَعُ فِي لَحْدِهِ وَ يُوضَعُ اللَّبِنُ عَلَى عَوْرَتِهِ- لِتُسْتَرَ عَوْرَتُهُ بِاللَّبِنِ وَ بِالْحَجَرِ وَ يُصَلَّى عَلَيْهِ ثُمَّ يُدْفَنُ.
English translationBab Ul Qaim Publications
Hadith.482 - Ammar ibn Musa al-Sabati said: "I asked Imam Abu Abdullah (as) about a group of people who were traveling along the seashore and came across a dead man who was naked and had been cast ashore by the sea. They themselves were also without sufficient clothing, having only a single garment. How should they perform the funeral prayer for him since he was naked and they did not have an extra cloth to shroud him?" Imam (as) replied: "A grave should be dug, and he should be placed in his burial niche, with bricks placed over his private parts to cover them. Then, the funeral prayer should be offered over him, and he should be buried."
Translation: Bab Ul Qaim Publications·Thaqalayn link·The Arabic above is the original.