Hadith 432

Ibn ‘Abbas said that "Water is necessary only when there is an emission” applies to a dream. Tirmidhi transmitted it, but I have not found it in the two Sahihs.

وَقَالَ ابْنُ عَبَّاسٍ: إِنَّمَا الْمَاءُ مِنَ الْمَاءِ فِي الِاحْتِلَامِ. رَوَاهُ التِّرْمِذِيُّ وَلَمْ أَجِدْهُ فِي الصَّحِيحَيْنِ

Reference: 5604320
In-book reference: Book 3, Hadith 432
Hadith 432 - Purification - Mishkat al-Masabih - Sunnah.com