Abd al-Rahman bin Abi Layla says: Sayyiduna Sahl bin Hunayf and Sayyiduna Qays bin Sa'd (may Allah be pleased with them both) were at al-Qadisiyyah when a funeral procession passed by them, and they both stood up. It was said to them: He is only one of the people of the land (a non-Muslim). They both said: A funeral procession passed before the Messenger of Allah (peace and blessings be upon him) and he (peace and blessings be upon him) stood up. It was said: This is the funeral of a Jew. He (peace and blessings be upon him) said: "Is it not a soul?"
Hadith Referenceالمعجم الكبير للطبراني / باب السين / 5585