Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) said: The truest dream is the one that comes at the time of Sahar (pre-dawn).

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.

Sayyiduna Ali ibn Abi Talib (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) said: Whoever lies with his eyes, on the Day of Resurrection he will be afflicted with the punishment of tying a knot between the two ends of a barley grain.

In another narration from Sayyiduna Ali (may Allah be pleased with him), it is reported that the Noble Prophet (peace and blessings be upon him) said: Whoever tells a false dream will be made to suffer on the Day of Resurrection by being ordered to tie a knot in a barley grain.

It is also narrated from Sayyiduna Ali (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: Whoever deliberately lies in a dream, let him prepare his abode in Hell.