Hadith 639
Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that the Prophet (peace and blessings of Allah be upon him) said: "Indeed, Allah the Exalted says: I am as My servant thinks of Me. If he thinks good, then good will be his, and if he thinks evil, then evil will be his."
(Imam Ibn Hibban, may Allah have mercy on him, says:) The narrator named Abu Yunus is Salim bin Jubair, and he is a Tabi'i.