Seeghat Un-nahi (the Forbiddance Form)
The Nahi (forbiddance) has a Seeghah (form) in the Arabic language and it is: لآ تَفْعَل or لا يَفْعَل and it means to leave or not do the action ‘Alaa Wajh -il-Isti’laa’ (upon the basis that it has come from a higher authority). There are Siyagh (forms) in accordance to the styles of the Arabic speech that establish the leaving or refraining from the action and the meaning of the Nahi can be deduced from the composition of the sentences. It is possible to sum up the forms of the Nahi as follows:
1- The form لآ تَفْعَلْ or لا يَفْعلَ This is like the Qawl of Allah Ta’Aalaa:
And do not kill the soul (human life) which Allah has forbidden [to be killed] except by [legal] right (Al-An’aam 151).
2 – The Lafzh حَرَّمَ ( Harrama) and its derivations (Mushtaqaat). This is like the Qawl of Allah (swt):
Prohibited to you are dead animals, blood, the flesh of swine, and that which has been dedicated to other than Allah (Al-Maa’idah 3).
3 – The Lafzh ' نَهَئ' (to forbid) and its Mushtaqaat (derivations). This is like in His Qawl (swt):
And forbids immorality and bad conduct and oppression (An-Nahl 90).
4 – Alfaazh At-Tahdheer (worded expressions of warning) like: ‘إياك‘ This is like in the Hadeeth of the Messenger of Allah (saw):
Beware of turning in the Salaah
5 – The Lafzh (wording) ‘لا يَحِلَّ ‘It is not Halaal).
This is like his statement (saw):
It is not Halaal to sell Al-Mughanniyaat (female singers), or purchase them, or trade in them, and the consumption of their price is Haraam (Ibn Maajah in his Sunan in the Book of Tijaaraat).
All of the above forms establish the Nahi (forbiddance) and even if most of them have not been provided in origin by the language to indicate the Nahi. The Nahi in them is established by the linguistic formation and composition of the sentence and what they indicate in terms of the meaning of the Nahi. That is because the only form that has been set and provided by the Arabic language for the Nahi is that of the Mudaari’ (present verb) form that is connected to the ‘Laa An-Naahiyah’ (لا) (the ‘Laa’ of forbidding).