Ibn Sirin narrates: Once Sayyiduna Sa'd bin Ubadah (may Allah be pleased with him) was urinating while standing; meanwhile he leaned (on something) and passed away. The jinn had killed him, and those jinn said: We have killed the chief of the Khazraj tribe, Sa'd bin Ubadah; we shot him with two arrows, which struck him straight in the heart.
Al-Tabarani recorded it in al-Mu'jam al-Kabir; Ibn Sirin did not live in the time of Sayyiduna Sa'd bin Ubadah (may Allah be pleased with him).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الطهارة / 1017