One can find the translation of Asbab al-Nuzul (i.e. the contexts and occasions of the Revelation of the Qur'an)into English by 'AlÄ« ibn Ahmad al-WÄhidÄ« (d. 468/1075), who is considered to be the earliest scholar of the branch of the Qur'anic sciences known as AsbÄb al-NuzÅ«l.
Put the lamb inside an oven bag and place in a roasting dish. Secure the bag and pierce several holes in the top of the bag to allow steam to escape. Bake the lamb in the preheated oven; a 2 kg leg of lamb will take 2 hours 40 minutes to cook.
Tip: As a rule, roast a leg of lamb for 15 minutes per 500g, plus 10 minutes more. Allow it to rest for a good 15 minutes before serving to ensure the juices redistribute, making a perfect roast. Preheat oven to 180 degrees C. 2  Cut slits in the top of the leg of lamb every 3cm apart deep enough to push slices of garlic down into the meat. 3  Sprinkle salt and pepper generously all over the top of lamb. 4  Place several sprigs of rosemary under and on top of the lamb.