Wa `alaykum as-Salamu wa Rahmatullahi wa Barakatuh.

The view of the massive majority of Muslim scholars including Ibn Abbas, Ibn Sirin, Al-Hakam, Ataa, Hammad, Malik, Shafi’i, Ahmad, Ishaq and Abu Hanifa is that selling and buying cats is permissible (Nawawi, Majmoo’, vol. 9, p. 229).

Some scholars prohibited its selling and buying due to the hadith of Jabir who was asked about the price of a dog and a cat; he said: Allah’s Messenger disapproved of that (Muslim), but the majority of scholars maintained that the word ‘a cat’ is inserted by an unreliable narrator. So, it cannot be regarded as authentically included at the text of this hadith.

Almighty Allah knows best.