Sayyiduna Furat bin Hayyan (may Allah be pleased with him) narrated that the Prophet (peace and blessings be upon him) had ordered him to be killed. He was a spy for Abu Sufyan. He passed by a gathering of the Ansar and said: "I am a Muslim." When this reached the Prophet (peace and blessings be upon him), he (peace and blessings be upon him) said: "We entrust some people to their faith; among them is Furat bin Hayyan." After that, he (peace and blessings be upon him) granted him a plot of land in Bahrain.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب المرتد / 16831