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## 252
The commentator has described in detail here other books, grass, etc., which are also prone to dust mites, due to the presence of dust mites in the Nishith Sutra wrapped in leather. The summary is as follows:
1. **Book Quintet:**
1. **Gandi Book:** A book that is square and long, with equal width and thickness.
2. **Kachchhpi Book:** A book that is wider in the middle and narrower at the edges, with less thickness.
3. **Musti Book:** A book that is round, with a diameter of four fingers, or square with four fingers in length and width.
4. **Samputa-Phalaka Book:** A book made from the planks of trees, etc.
5. **Chhedapati Book:** A book made from the leaves of palm trees, etc., with less width and more length and thickness, and with one, two, or three holes in the middle.
All these books are prone to dust mites and therefore difficult to read, hence they are considered unsuitable.
2. **Grass Quintet:**
1. **Shali**, 2. **Vrihi**, 3. **Kodrava**, 4. **Ralak (Kangu)** - these four are types of straw-like grass, and 5. **Praranyaka** - wild grass like Shyamaka, etc.
These are also prone to dust mites. The description of these grasses is found in the Uttaradhyayanasutra, Adhyaya 23, Gatha 17:
"Palalam phasuyam tattha, panchamam kusa tanani ya.
Go yamas sa nisijjaae, khippam sampaname."
**Toka:** This Gatha states that there are four types of straw, seedless and suitable for bedding, and five types of Kusa grass. The "chakara" indicates that other suitable grasses are also included.
The commentator has called these five grasses unsuitable for reading due to the presence of dust mites, and has also prescribed a short-term atonement for them.
The presence of dust mites in these straws is evident, yet they are called "prasauk" in the above Gatha. The reason for this is that they become "prasauk" when used by householders.
In the Agam era, both Sadhus and Shravaks used straw, Darbha, etc. This is described in many Agams. Their use has become very limited in the present time.
3. **Unsuitable Cloth Quintet:**
1. **Koyavirui:** Cloth with Koyavirui attached.
2. **Pravaraka:** Large blankets from Nepal, etc., with wool attached.
3. **Dadhigalli:** Cloth with ten, i.e., pods attached.