It is narrated from Hazrat Abu Darda (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) explained the Quranic verse "For them are glad tidings in the life of this world" by saying that what is meant by glad tidings are good dreams which a Muslim sees himself or which someone else sees for him.
Hadith Referenceمسند احمد / من مسند القبائل / 27510
Hadith Gradingحکم دارالسلام:صحيح لغيره، وهذا إسناد ضعيف لإبهام الراوي عن أبى الدرداء، وقد اختلف فى إسناده