The Messenger of Allah ﷺ said, "Among the worst of lies is for a person to claim that his eyes saw in a dream what they did not see."
حدثنا عبد الصمد حدثنا عبد الرحمن بن عبد الله بن دينار مولى ابن عمر عن أبيه
أن رسول الله ﷺ قال إن من أفرى الفرى أن يري عينيه في المنام ما لم تريا
Its chain of transmission is sahih. Bukhari related it in 12:376–377 from Ali bin Muslim, from Abdul-Samad, with this chain. Something similar to it will come at greater length at 5998 through another route with a sahih chain. In Majma al-Zawaid 1:144 there is something similar, with this addition at the end, "And among the greatest fabricators of lies is one who attributes to me what I did not say." Haythami said, Bazzar related it, and its narrators are the narrators of the sahih. Shafii related in Risalah 1090 something similar in meaning, at greater length, from the hadith of Wathila bin Asqa. The hadith of Wathila will come in the Musnad at 16082, 17047, and 17050, and see what has already passed at 3383.Al-firā, with the fā vowelled with a kasra and shortened, is the plural of firyah, which means a lie. Afrā is the superlative form of it, meaning the most outrageous of lies is for a person to say, "I saw such and such in a dream," when he did not see anything at all, because this is a lie against Allah, for it is He who sends the angel of dreams to show visions in sleep. This is what Ibn Athir said. In Fath al-Bari, quoting Ibn Battal, it is said that a firyah is an enormous lie, one that provokes astonishment."Mā lam tarā" ("what he did not see") is how it is established in ك and م, with the weak letter retained despite the presence of the jussive particle, which is permissible and correct, as we have said many times, and as we explained in our commentary on Shafii's Risalah in several places, including numbers 755 and 1090. The mark of correctness has been placed twice over the word "tarā" in م. In ح it appears as "tar", with the weak letter dropped, and this is a variant reading found in the margin of ك.