Explanation of the Hadith that says Satan urinates in the ear(s) of the one who sleeps till the sunrise missing the obligatory morning (fajr) prayers. Explanation is based on study of related hadith narrations, Arabic literature and comments of the classical Muslim exegetes.
Ibn Hajr (d. 852 A.H.) writes:
“It is an example used for the one who is negligent of prayers due to heavy sleep as if he has got his ear filled with urine till it became weighed down and his senses got corrupted. Arabs have used urination as a metaphor for corruption.”
Lane’s Arabic-English Lexicon, Book I, p.277