The Book of the Etiquette of Sleeping, Lying and Sitting etc
Riyad as-Salihin #160
كتاب آداب النوم
وعنه قال: قال رسول الله صلى الله عليه وسلم: «من رآني في المنام فسيراني في اليقظة -أو كأنما رآني في اليقظة- لا يتمثل الشيطان بي» ((مُتَّفَقٌ عَلَيهِ)).
Abu Hurairah (May Allah be pleased with him) reported:
Messenger of Allah (ﷺ) said, “He who sees me in his dream will see me in his wakefulness (or he (ﷺ) may have said it is as though he has seen me in a state of wakefulness), for Satan does not appear in my form.”.
وعنه قال: قال رسول الله صلى الله عليه وسلم: "من رآني في المنام فسيراني في اليقظة -أو كأنما رآني في اليقظة- لا يتمثل الشيطان بي" ((مُتَّفَقٌ عَلَيهِ)).
Messenger of Allah (ﷺ) said, "He who sees me in his dream will see me in his wakefulness (or he (ﷺ) may have said it is as though he has seen me in a state of wakefulness), for Satan does not appear in my form.".
— Riyad as-Salihin, Hadith 160