What specifications apply when contracting for wood intended for making bows (Qusi)?

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If the wood is intended for making bows (Qusi), the aforementioned specifications must be mentioned. Additionally, whether it is *sahli* (soft/pliable), *jabali* (hard/mountain-grown), *khut*, or *falaqah* must be stated. The *jabali* type is stronger than the *sahli*, and the *khut* is stronger than the *falaqah*.