What is the ruling on praying with clothes if they have been touched by a dog's saliva?

The majority of scholars hold that the saliva of a dog is impure (najis) and that anything it touches must be purified seven times, one of which should be with earth. They cite the hadith of Abu Hurairah concerning a dog licking a vessel, which commands its contents to be spilled, and that purification can be for either a ritual impurity (hadath) or a material impurity (khabath).

The Malikis, however, maintain that dog saliva is pure, and that washing a vessel licked by a dog is an act of devotion (ta'abbudi). They cite as evidence that the Lawgiver did not command the washing of game caught by a dog, and that dogs used to urinate and enter the mosque during the time of the Prophet (peace be upon him) without the Companions sprinkling anything. The majority of scholars considered these cases to be exceptions due to necessity or to have occurred in the early period of Islam.

According to the view of the majority, prayer is not permissible with a garment that has been touched by dog saliva until it is purified seven times, and it is recommended to use earth, or soap instead if earth is unavailable. According to the Maliki view, prayer with such a garment is valid and there is no harm in it.