Abdullah bin Abbas reported,

The Messenger of Allah ﷺ passed by two graves and said, "These two are being punished, and they are not being punished for something major. As for this one, he did not guard himself from his urine. As for this one, he used to walk about spreading slander."Then he called for a fresh palm branch, split it in two, and planted one on this grave and one on that grave. Then he said, "Perhaps their punishment will be lightened as long as these do not dry out."Mansur differed with him. He narrated it from Mujahid from Ibn Abbas without mentioning Tawsa.

أخبرنا هناد بن السري عن وكيع عن الأعمش قال سمعت مجاهدا يحدث عن طاوس

عن ابن عباس قال

مر رسول الله ﷺ على قبرين فقال إنهما يعذبان وما يعذبان في كبير أما هذا فكان لا يستنزه من بوله وأما هذا فإنه كان يمشي بالنميمة ثم دعا بعسيب رطب فشقه باثنين فغرس على هذا واحدا وعلى هذا واحدا ثم قال لعله يخفف عنهما ما لم ييبسا خالفه منصور رواه عن مجاهد عن ابن عباس ولم يذكر طاوسا