Abu Hurairah reported,

We were walking with the Messenger of Allah ﷺ when we passed by two graves. He stopped, and we stopped with him. His color began to change until the sleeve of his shirt trembled.We said, "What is the matter, Prophet of Allah?"He said, "Do you not hear what I hear?"We said, "What is it, Prophet of Allah?"He said, "These are two men being severely punished in their graves for a minor sin."We said, "What is it for, Prophet of Allah?"He said, "One of them did not take care to keep clean from urine, and the other used to harm people with his tongue and spread tales among them."Then he called for two fresh palm branches and placed one on each grave.We said, "Will that benefit them, Messenger of Allah?"He said, "Yes, their punishment will be lightened as long as these remain moist."

عن أبي هريرة، قال

كنا نمشي مع رسول الله ﷺ فمررنا على قبرين، فقام، فقمنا معه، فجعل لونه يتغير حتى رعد كم قميصه، فقلنا: ما لك يا نبي الله؟ قال: ما تسمعون ما أسمع؟ قلنا: وما ذاك يا نبي الله؟ قال: هذان رجلان يعذبان في قبورهما عذابا شديدا في ذنب هين، قلنا: مم ذلك يا نبي الله؟ قال: كان أحدهما لا يستنزه من البول، وكان الآخر يؤذي الناس بلسانه ويمشي بينهم بالنميمة، فدعا بجريدتين من جرائد النخل، فجعل في كل قبر واحدة، قلنا: وهل ينفعهما ذلك يا رسول الله؟ قال: نعم يخفف عنهما ما داما رطبتين.