Wa `alaykum As-Salamu wa Rahmatullahi wa Barakatuh.

In the name of Allah, the All-Merciful, the Mercy-Giving

All praise is due to Allah. Peace and blessings be upon Prophet Muhammad.

 

If the percentage of haram products these stores and restaurants sell in relation to other halal products is high, you have to quit selling their franchise. Still even with low percentage, your income will be including a percentage of haram, which you have to get rid of.

 

Therefore, you should avoid selling franchises for such stores and restaurants altogether and find alternative stores with pure halal products to sell their franchise.

 

Allah Almighty knows best.