The Messenger of Allah ﷺ one day made me mount behind him and he confided to me something secret which I would not disclose to anybody; and the Messenger of Allah ﷺ liked the concealment provided by a lofty place or cluster of dates (while answering the call of nature), Ibn Asma' said in his narration: It implied an enclosure of the date-trees. (Using translation from Muslim 342)   

أَرْدَفَنِي رَسُولُ اللهِ ﷺ ذَاتَ يَوْمٍ خَلْفَهُ فَأَسَرَّ إِلَيَّ حَدِيثًا لَا أُحَدِّثُ بِهِ أَحَدًا مِنَ النَّاسِ وَكَانَ أَحَبَّ مَا اسْتَتَرَ بِهِ رَسُولُ اللهِ ﷺ لِحَاجَتِهِ هَدَفٌ أَوْ حَائِشُ نَخْلٍ يَعْنِي حَائِطَ نَخْلٍ  

[Machine] Jabir, I followed the Messenger of Allah ﷺ as he went to relieve himself. I brought him water to wash with. The Messenger of Allah ﷺ looked and did not see anything to cover himself with. Then he saw two trees by the edge of the valley. The Messenger of Allah ﷺ went to one of them and took a branch from its branches. He said, "Come to me by the permission of Allah, O tree." The branch came down with him as if it were an obedient camel with its rider. He then went to the other tree and took a branch from its branches. He said, "Come to me by the permission of Allah, O tree." The branch came down with him in the same manner. When he was in the center between the two trees, he said, "Come together by the permission of Allah, O trees." They came together. Jabir said, "I sat down, pondering to myself, when a noise came from the direction of the Messenger of Allah ﷺ . I turned and saw him approaching, and the two trees had separated. Each one of them stood on its own. He mentioned the rest of the narration."  

جَابِرٌ فَذَهَبَ رَسُولُ اللهِ ﷺ يقْضِي حَاجَتَهُ فَاتَّبَعْتُهُ بِإِدَاوَةٍ مِنْ مَاءٍ فَنَظَرَ رَسُولُ اللهِ ﷺ فَلَمْ يَرَ شَيْئًا يَتَسَتَّرُ بِهِ فَإِذَا شَجَرَتَانِ بِشَاطِيءِ الْوَادِي فَانْطَلَقَ رَسُولُ اللهِ ﷺ إِلَى إِحْدَاهُمَا فَأَخَذَ غُصْنًا مِنْ أَغْصَانِهَا فَقَالَ انْقَادِي عَلَيَّ بِإِذْنِ اللهِ تَعَالَى فَانْقَادَتْ مَعَهُ كَالْبَعِيرِ الْمَخْشُوشِ الَّذِي يُصَانِعُ قَائِدَهُ حَتَّى أَتَى الشَّجَرَةَ الْأُخْرَى فَأَخَذَ بِغُصْنٍ مِنْ أَغْصَانِهَا فَقَالَ انْقَادِي عَلَيَّ بِإِذْنِ اللهِ تَعَالَى فَانْقَادَتْ مَعَهُ كَذَلِكَ حَتَّى إِذَا كَانَ بِالْمَنْصَفِ فِيمَا بَيْنَهُمَا لَأَمَ بَيْنَهُمَا يَعْنِي جَمَعَهُمَا فَقَالَ الْتَئِمَا عَلَيَّ بِإِذْنِ اللهِ تَعَالَى فَالْتَأَمَتَا قَالَ جَابِرٌ فَجَلَسْتُ أُحَدِّثُ نَفْسِي فَحَانَتْ مِنِّي لَفْتَةٌ فَإِذَا أَنَا بِرَسُولِ اللهِ ﷺ مُقْبِلٌ وَإِذَا الشَّجَرَتَانِ قَدِ افْتَرَقَتَا فَقَامَتْ كُلُّ وَاحِدَةٍ مِنْهُمَا عَلَى سَاقٍ وَذَكَرَ بَاقِي الْحَدِيثِ  

[Machine] On the authority of the Prophet ﷺ who said, "Whoever enters the lavatory should cover himself, and if he cannot find anything except a handful of sand, let him use it and then cleanse himself with water. Verily, the devils play with the utensils of the children of Adam. Whoever acts accordingly has done well, and whoever does not, there is no blame upon him."  

عَنِ النَّبِيِّ ﷺ قَالَ مَنْ أَتَى الْغَائِطَ فَلْيَسْتَتِرْ فَإِنْ لَمْ يَجِدْ إِلَّا كَثِيبًا مِنْ رَمْلٍ يَجْمَعُهُ ثُمَّ يَسْتَدْبِرُهُ فَإِنَّ الشَّيَاطِينَ يَلْعَبُونَ بِمَقَاعِدِ بَنِي آدَمَ مَنْ فَعَلَ فَقَدْ أَحْسَنَ وَمَنْ لَا فَلَا حَرَجَ