وعن أبى هريرة رضى الله عنه قال‏:‏ سمعت رسول الله صلى الله عليه وسلم يقول‏:‏ ‏"‏لم يبق من النبوة إلا المبشرات‏"‏ قالوا‏:‏ وما المبشرات‏؟‏ قال‏:‏ ‏"‏الرؤيا الصالحة‏"‏ (( رَوَاهُ البُخَارِيُّ))‏.‏
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Abu Qatadah (May Allah be pleased with him) reported

The Prophet (ﷺ) said, "A good vision (dream) is from Allah and a bad dream is from the Satan. He who sees something in a dream that he dislikes, should blow thrice on his left, must seek Allah's Refuge from the evil of the Satan (i.e., by saying: A'udhu billahi minash-Shaitanir-Rajim). Then it will not harm him."[Al-Bukhari and Muslim].