The Nahi of a matter is not a command to do the opposite because the Seeghat un-Nahi (forbiddance form) has been provided in the language to indicate the Talab Tark Al-F’il (The request to leave or not do the action) in a decisive or indecisive manner whilst it includes the Haraam and the Makrooh within it.

Consequently, in respect to the Qawl of Allah Ta’Aalaa:

The Nahi (forbiddance) of At-Ta’feef (expressing displeasure/disdain) towards the parents, does not mean the command to do the opposite of At-Ta’feef. So: ‘Do not say to them Uff’ does not mean: ‘Say to them other than Uff’. Just as it does not mean that the Waajib (obligation)is to say to them other than ‘Uff’ and that is because the leaving or abstention from Haraam does not mean the Fard and because the Nahi does not mean the command with opposite to the Nahi. That is because the Nahi linguistically means the request to abstain from undertaking the action whilst it does not mean the command to undertake the action opposite to the action that has been forbidden.

What applies in respect to the Fard and the Haraam applies in the same way upon the Mandoob and the Makrooh.