Bahtsul Masail Kubro throughout Java and Madura which was held at Ponpes Langitan on 13-14 March 2014 decided several laws regarding the use of Eterna China Bristles brand brushes which have been widely circulated in various shops. The reason is, the brush is produced from pig hair.
Kadinkes Kab. Tuban in January 2014 sent a sample of the brand brush to the Indonesian Ulema Council Drug and Food Control Testing Institute (LPPOM MUI) East Java province.
The result is positive that the brush with the brand ETERNA CHINA BRISTLES is made of animal hair with characteristics when burned with a stinging shoulder (Javanese: sangit). It's different if the brush is made of nylon or other synthetic materials. Then the shoulder will not sting and the brush will curl (Javanese: mengkeret).
China Bristles means the same as Hog Bristles which means domesticated pigs. This product can be seen from the brush handle that reads Bristles, Pure Bristles, 100% China Bristles and so on.
Budhi Baskhara, a Tuban chemist and practitioner, said, “Boar bristles are the cheapest to use brushes than others. The cost of producing brushes is much more profitable than synthetic bristles. It remains only to collect, clean and cut. Especially if the brush is produced in China, where the stock of pork skin is abundant.”
The man who graduated from Ahmad Yani University Bandung majoring in chemistry said that synthetic fur which usually uses nylon, a type of polymer, is much more expensive to produce because the raw material for carbon is not cheap. In addition to nylon brushes, toothbrushes and makeup brushes are also used.
In Yahoo Answers it is stated that the white and black bristles of the Pig are widely used in bread brushes, wall paint, cosmetics and so on. According to one official at the District Court (PN) of Tuban Regency, Bahyu Agung Kurniawan, that it is necessary to be careful because not all of these sea urchins have Bristles inscribed. (Source: Radar Bojonegoro January 21 & 24 2014 & Jawa Pos Edition January 21, 2014 p. 13).
Then, what about the law on wall paint or wood that has been polished on the walls of houses, mosques, bathrooms which are painted using a pig's bristle brush?
In this case there is an error (difference of opinion) between the opinion of Imam Shafi'i who says the law is unclean, while according to Imam Malik and Ibn Qosim the law is holy.
This unclean law is if it is already Tahaqqunnajasah (the brush with the brand above is really from sea urchins), if it is not tahaqquq then use the original law, which is holy.
According to the Syafi'iyah, the paint is still unclean even though the brush has already been used to paint the mosque. The paint cannot be cleaned because it has become sharp (it becomes solid). And if what is already painted is a mosque, then for those who know it is obligatory to remove it immediately (paint.red). Isti'malun Najasah (use of unclean items) in this case is Haram except for people who do not know.
Then, what is the solution for wholesalers who already buy in large quantities and bakeries that have made bread in large quantities?
The sale and purchase contract of the wholesalers is fasid (damaged) because the goods being sold are subject to najis law. The solution is to follow the opinion of Imam Malik who says that the hair of dogs and pigs is sacred.
As for if you follow Imam Shafi'i, the wholesalers are obliged to return the brushes to the producers and the producers are obliged to return the wholesalers' money because the transaction contract is damaged.
However, the bahtsul masa'il decision is still not one hundred percent final because it still requires a re-enactment process from the mushohih regarding the collection of ta'bir-ta'bir.