The Islamic sciences (Arabic: علوم الدين, romanized: ʿulūm al-dīn, lit.
'the sciences of religion') are a set of traditionally defined religious sciences practiced by Islamic scholars (ʿulamāʾ), aimed at the construction and interpretation of Islamic religious knowledge.
[1] These sciences include: Shiʿi Islam[4][5] Many of the same subjects are studied at Shiʿi seminaries (known as hawza), but there are some differences: The celebrated Islamic scholar Abu Hamid Al-Ghazali wrote on Islamic sciences in his well known book The Revival of Religious Sciences (Ihya `ulum al‑din).
So, for example, someone working in animal husbandry should know rules concerning zakat; a merchant "doing business in an usurious environment", should learn rules about riba so as "to effectively avoid it".
Al‑Ghazali considers wajib kifa'i religious sciences to be classified into four groups: Al‑Ghazzali aserts that not all religious sciences are "praiseworthy" (mahmud), as some proport to be "oriented towards the Shari'ah but actually deviate from its teachings".