3-160 Muhammad ibn Ali Majiluyih - may God be pleased with him - narrated that Muhammad ibn Yahya al-Attar quoted Muhammad ibn Ahmad, on the authority of Ibrahim ibn Hashim, on the authority of Al-Hassan ibn abil-Hassan al-Farsi , on the authority of Suleiman ibn Hafs al-Basry, on the authority of Ja’far ibn Muhammad as-Sadiq that God’s Prophet (MGB) said, “
The three worst things of which the Earth has complained of to God are: undue blood that is shed on it; the washing off after fornication, and sleeping on it (after praying) before the sun rise.”