It is narrated from Sayyiduna Awf bin Malik (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Dreams are of three kinds: one is frightening things from Satan, so that he may grieve the son of Adam; the second is the thoughts that a person intends or thinks about while awake, which he then sees in his sleep; and the third are those (true dreams) which are one part of forty-six parts of prophethood."
Abu Ubaydullah Muslim bin Mishkam (may Allah have mercy on him) said: I asked him (Sayyiduna Awf bin Malik (may Allah be pleased with him)): "Did you hear this yourself from the Messenger of Allah (peace and blessings be upon him)?" He replied: "Yes, I heard it (myself) from the Messenger of Allah (peace and blessings be upon him)."
Imam al-Tabarani (may Allah have mercy on him) said: "This hadith is narrated from Sayyiduna Awf bin Malik (may Allah be pleased with him) only with this chain, and Yazid bin Ubaydah (may Allah have mercy on him) is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 6742
Hadith Takhrij«أخرجه ابن حبان فى «صحيحه» برقم: 6042، وابن ماجه فى «سننه» برقم: 3907، والبزار فى «مسنده» برقم: 2743، وابن أبي شيبة فى «مصنفه» برقم: 31147، والطحاوي فى «شرح مشكل الآثار» برقم: 2178، والطبراني فى «الكبير» برقم: 118»