Umar bin Khattab led the people in the dawn prayer, then went out early to his land at Jurf, where he noticed traces of a wet dream on his garment. He remarked, "Ever since we started eating rich, fatty food, our veins have grown soft." So he bathed, washed the traces from his garment, and repeated his prayer.
و حدثني عن مالك عن يحيى بن سعيد
أن عمر بن الخطاب صلى بالناس الصبح ثم غدا إلى أرضه بالجرف فوجد في ثوبه احتلاما فقال إنا لما أصبنا الودك لانت العروق فاغتسل وغسل الاحتلام من ثوبه وعاد لصلاته