عَنِ ابْنِ عُمَرَ رَضِيَ اللَّهُ عَنْهُمَا أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ مِنْ أَفْرَى الْفِرَى أَنْ يُرِيَ عَيْنَيْهِ فِي الْمَنَامِ مَا لَمْ تَرَيَا
Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) narrates that the Noble Prophet (peace and blessings be upon him) said: The greatest lie is that a person claims to have seen in his sleep something which he did not see.