Musannaf Ibn Abi Shaybah 12416 — What lightens the punishment

Bahr bin Marar narrates from his grandfather Sayyiduna Abu Bakrah (may Allah be pleased with him) that he said: I was walking with the Prophet (peace and blessings be upon him) when he (peace and blessings be upon him) passed by two graves. He (peace and blessings be upon him) said: "These two are being punished. Who will bring me a palm stalk?" Sayyiduna Abu Bakrah said: Another man and I hurried and brought him a palm stalk. He (peace and blessings be upon him) split the stalk from its top into two parts and planted one on one grave and the other on the other grave, and said: "Perhaps, as long as there is moisture in these stalks, their punishment will be lightened because of it. They are being punished for backbiting and urine (for not guarding against its drops)."