مسائل المنتخبه (Articles Of Islamic Acts) - الخوئي، السيد أبوالقاسم - الصفحة ٤٢ - PURIFYING THINGS

VII. ISLAM
٢١٢. If an unbeliever professes Islam by saying: Ashhadu an la ilaha illallah wa ash hadu annaMuhammadan Rasulullah (١ testify that there is no deity but Allah andI also testify that Muhammad is His Prophet) and acknowledges the Oneness of Allah and the Prophethood of the Prophet of Islam in any language, he becomes a Muslim and assoon as he becomes a Muslim his body, sweat, saliva and mucus become pure. However, if there be any original impurity on his body at the time of embracing Islam it isnecessary that it should be purified with water. And even if the original impurity had already been removed before his embracing Islam he should, on the basis of obligatoryprecaution, purify that spot with water.
٢١٣. If before an unbeliever becomes a Muslim, his dress has touched his body with wetness and is not on his body at the time of his becoming a Muslim, it isimpure. And even if it is on his body at that time he should purify it on the basis of obligatory precaution.
٢١٤. If an unbeliever professes Islam he will be pure even if another person does not know whether or not he has embraced Islam sincerely. And the same orderapplies even if it is known that he is not sincere in embracing Islam but his words or deeds do not betray anything which may be contrary to the confirmation by him of theOneness of Allah and of Prophet Muhammad being the last Prophet of Allah.
VIII. RELATION (TABAIYAT)
٢١٥. Tabaiyat means that an impure thing may become pure as s consequence of the purification of something else.
٢١٦. If wine is transformed into vinegar, the part of the container up to which it reaches on account of fermentation will also become pure, However, if the otherpart of the container became impure on account of having come in contact with wine