Lingvistik jihatdan "Shart" so'zi quyidagini anglatadi: Al-'Alaamah Al-Laazimah (ichki yoki zarur belgi yoki xususiyat).

Linguistically the Shart means: Al-’Alaamah Al-Laazimah (The inherent or necessary sign or characteristic).

Usuliyyun istilohiga ko‘ra, hukmi vad'iy bo‘lgan shart quyidagicha ta'riflanadi:

The Shart which is a Hukm Wad’iy according to the Istilaah (terminological definition) of the Usooliyeen is:

Ash-Shart — bu shunday vasf (ta'rif) bo'lib, u shart qilinayotgan narsani (al-mashrut) to'ldiradi, bu mashrut amal (al-fi'l) bo'lsinmi yoki amalning sababi bo'lsinmi.

Ash-Shart is that which is a Wasf (description) that completes the matter that is being conditioned for (Al-Mashroot) whether this Mashroot was the action (Al-Fi’l) or the Sabab of the action.

Misol:

Example:

Al-Fi'l (harakat): As-Salaah va u mashru' (shartlar qo'yilgan ish).