Sahih Al Bukhari Hadith Number 1313

Narrated `Abdur Rahman bin Abi Laila: Sahl bin Hunaif and Qais bin Sa`d were sitting in the city of Al-Qadisiya. A funeral procession passed in front of them and they stood up. They were told that funeral procession was of one of the inhabitants of the land i.e. of a non-believer, under the protection of Muslims. They said, “A funeral procession passed in front of the Prophet (peace be upon him) and he stood up. When he was told that it was the coffin of a Jew, he said, “Is it not a living being (soul)?”