Ruling on selling visas and work permits

Grocery store selling foods containing pork ingredients

Opening a store to sell reptiles and predatory animals

Selling a box of toys whose contents are unknown

Can he sell alcohol in order to pay off an interest-based loan?

Selling alcohol to kaafirs

Rewards for donating blood

His father asks him to buy cigarettes for him

Selling a mobile phone for which the purchaser pays in installments, from which the vendor pays for the “smart card”

Is it permissible to sell pure silk?