islam forbids taking away the kitten from its mom I waited as much as I could. Tomorrow I must collect my kitten. It is 9w old (legal age). People advise waiting 10–12w for the Mom starts leaving it. the mom stopped nursing at 8w, but the owner can't keep it longer wants me to take it 2morrow .

I'm not very familiar with the nature of this or the rulings on these things, but in your case, if they're just going to throw them away in the street or something like that, you can take them, inshallah. Either way, they will be separated from their mother and thrown on the street, so you can take them.