1.) The cat should not be sold for money or other traded goods.
Narrated Jabir (may Allah be pleased with him): "The Messenger of Allah (peace and blessings of Allah be upon him) prohibited eating the cat and from its price."(Jami` at-Tirmidhi)
Abu Zubair (may Allah be pleased with him) said:
I asked Jabir (may Allah be pleased with him) about the price of a dog and a cat; he said: “Allah's Messenger (peace and blessings of Allah be upon him) disapproved of that”. (Sahih Muslim)
Muslims are free to live with cats but they must treat cats well, providing the cat with enough water and food and giving "roaming time" (a degree of freedom of movement)
It was narrated from Abu Hurairah (may Allah be pleased with him) that:
The Messenger of Allah (peace and blessings of Allah be upon him)said: "Cats do not invalidate the prayer, because they are one of the things that are useful in the house." (Sunan Ibn Majah)
'A good deed done to an animal is as meritorious as a good deed done to a human being, while an act of cruelty to an animal is as bad as an act of cruelty to a human being'
Abu Hurayrah (may Allah be pleased with him) was a close Companion of the Prophet Muhammad (peace and blessings of Allah be upon him) and has narrated more hadiths, or sayings of the Prophet Muhammad (peace and blessings of Allah be upon him), than any other Companion. He (may Allah be pleased with him) was known for being very sympathetic and loving towards animals so much so that although his name was `Abdur-Rahman, he was known as Abu Hurayrah, meaning “father of the kitten.” He (may Allah be pleased with her) was called so because of a small cat that he used to feed and care for and carry with him everywhere he went.