Liaison office of Grand Ayatullah Sayyid Ali Al Sistani (L.M.H.L) in London, Europe, North and South America.
Ruling 2617. In some traditions, a number of things are considered to be disapproved when slaughtering an animal:
1. to remove the hide of an animal before the spirit (rūḥ) has left its body;
2. to slaughter an animal in a place where a similar animal can see it being slaughtered;
3. to slaughter an animal at night or before midday (ẓuhr) on Friday. However, it is not disapproved in case of necessity;
4. for a person to slaughter a quadruped he has raised himself.