Sayyiduna Ali bin Abi Talib (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "Whenever a book is thrown in a place where it is likely to be lost on the earth, Allah sends His angels there, who surround it with their wings and keep it pure, until Allah sends one of His friends (awliya) who picks it up from the earth. And whoever picks up any written thing from the earth in which there is one of the names of Allah, Allah raises his name in 'Illiyyin, and Allah lightens the punishment from his parents, even if they were disbelievers."