Musnad Ahmad
It was narrated that ‘Ali (رضي الله عنه) said, attributing it to the Prophet (ﷺ): “Whoever tells a lie about his dream will be commanded to tie a grain of barley on the Day of Resurrection.`
حَدَّثَنَا أَبُو سَعِيدٍ، حَدَّثَنَا إِسْرَائِيلُ، حَدَّثَنَا عَبْدُ الْأَعْلَى، عَنْ أَبِي عَبْدِ الرَّحْمَنِ، عَنْ عَلِيٍّ، رَضِيَ اللَّهُ عَنْهُ وَرَفَعَهُ قَالَ مَنْ كَذَبَ فِي حُلْمِهِ كُلِّفَ عَقْدَ شَعِيرَةٍ يَوْمَ الْقِيَامَةِ.
Grade: Sahih because of corroborating evidence; this is a da'eef isnad because of the weakness of Abdul-A'la] (Darussalam)
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