义务的类别（Aqsaam Al-waajib）
Aqsaam Al-waajib (the Categories Of The Obligation)
根据不同的考虑，Waajib（义务）被划分或归类。因此，就其履行（Adaa’）而言有一种划分，就其评估（Taqdeer）而言有另一种划分，就其指定而言有第三种划分，就承担责任者（Mukallaf）而言有第四种划分。
The Waajib is divided or categorised in accordance to different considerations. As such, there is a division in respect to its performance (Adaa’), another in respect to its evaluation (Taqdeer), a third in respect to its designation and a fourth in respect to the one who has been charged with it (Mukallaf).
根据履行时限来划分的瓦志布（Waajib）类别
The categories of the Waajib in consideration of its time of performance or undertaking
"Waajib Mutlaq"与"Waajib Muqayyad"(无限定的义务与有限定的义务):