Abu 'Abdur-Rahman(As-Sulami) narrated from 'Ali and I think he said:
" From the Prophet(s.a.w), who said:"Whoever lies about his dream, he will be required to knot barely kernels on the Day of Judgement."
English reference: Vol. 4, Book 8, Hadith 2281
Arabic reference: Book 34, Hadith 2450