المتين
كلمة (المتين) في اللغة صفة مشبهة باسم الفاعل على وزن (فعيل) وهو...
When two or more persons participate in work and split the wages between them.
"Taqabbul" (acceptance/agreement) is a term that Muslim jurists use mostly to refer to a kind of partnership between two or more people who agree to accept a certain job, like sewing or carpentry, and split the profit between them according to conditions they agree on. This term is more common in the books of the Hanafi scholars than in other schools of jurisprudence. It is also called "sharikat al-a‘māl" (work partnership), "sharikat-us-sanā’i‘" (crafts partnership), and "sharikat al-abdān" (bodies partnership).
"Taqabbul": obligation, commitment. Original meaning: facing something with care and concern.
To accept someone else’s instructions to attend to some work and pledge to do it, committing oneself to it.