"النَّهي" 在阿拉伯语中有一种形式（صيغة），即：لآ تَفْعَل 或 لا يَفْعَل，其含义是放弃或不做该行为，且是"على وجه الاستعلاء"（基于来自更高权威的要求）。阿拉伯语的言辞中还有若干种格式（صيغ），用以确立放弃或避免某一行为，"النَّهي"的含义可以从句子的结构中推断出来。对"النَّهي"的各种形式可以概括如下：

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- 形式「لآ تَفْعَلْ」或「لا يَفْعلَ」，这类似于安拉泰阿拉的话语：

1- The form لآ تَفْعَلْ or لا يَفْعلَ This is like the Qawl of Allah Ta’Aalaa: