Abu Talib, may Allah be pleased with him,1 but this prohibition is understood to indicate disapproval, because of the hadith restricting those animals that are not valid to four categories.
The third category consists of defects concerning which no prohibition has been reported, but which detract from complete soundness. These have no effect: offering such an animal in sacrifice is neither disliked nor prohibited, even if people may regard it as defective. Examples include an animal whose one-eyedness is not plainly evident; one with a broken tooth other than the incisors; and one with a slight limp. These are defects, but they do not prevent the sacrifice from being valid, nor do they entail disapproval, due to the absence of evidence. The basic principle is freedom from liability.
The sunnah is to slaughter camels by piercing them while they are standing, with their left foreleg tied, thrusting the spear into the hollow between the base of the neck and the chest. Other animals are slaughtered by cutting the throat, though the reverse is permissible.
His statement, “The sunnah is to slaughter camels while they are standing, with their left foreleg tied”: this is the sunnah, because the Prophet ﷺ used to do so. It is also indicated by Allah’s statement:
“Then mention the Name of Allah over them as they stand in rows. Then, once they have fallen on their sides, eat from them.” [al-Hajj 22:36]
“Have fallen” means that they have fallen to the ground. The left foreleg is the one that should be tied because the slaughterer will approach from the animal’s right side and will hold the spear in his right hand. If the right foreleg were tied, the camel might strike the one slaughtering it with its knee when it senses what is happening, placing him in danger. But when its left foreleg is tied and its right foreleg remains standing, it cannot move with the right foreleg; and once it is slaughtered, it will fall onto its left side, where the tied foreleg is.
This is the sunnah,2 but if a person is unable to do this,