سنن النسائي 31

It was narrated that Ibn 'Abbas said:"The Messenger of Allah (ﷺ) passed by two graves and said: 'These two are being punished, but they are not being punished for something that was difficult to avoid. As for this, he used not to take precautions to avoid (his body to clothes being soiled by) urine, and this one used to walk around spreading malicious gossip.' Then he called for a fresh palm-leaf stalk and split it in two, and placed one piece on each of the two graves. They said: 'O Messenger of Allah, why did you do that?' He said: 'Perhaps the torment will be reduced for them so long as this does not dry out.'" Mansur Contradicted him, he reported it from Mujahid from ibn 'Abbas but he did not mention Tawus in it

Rapporté par Ibn 'Abbas : Le Messager d’Allah (ﷺ) est passé devant deux tombes et a dit : "Ces deux-là sont punis, mais pas pour quelque chose de difficile à éviter. L’un ne faisait pas attention à ne pas se salir d’urine, et l’autre colportait des rumeurs. " Puis il a demandé une tige de palmier fraîche, l’a coupée en deux et a mis un morceau sur chaque tombe. On lui a demandé : "Ô Messager d’Allah, pourquoi as-tu fait cela ?" Il a répondu : "Peut-être que leur châtiment sera allégé tant que cela ne sera pas sec