I follow the view of Ibn Taymiyyah that whoever was ignorant about a ruling in prayer does not have to repeat it. Does this mean the prayer is valid? My local imams make many mistakes and often change meaning in Fatiha or elsewhere, thinking that small mistakes don't matter. Can I pray behind them?

Ustadh AbdulAziz al-Haqqan
Can you bring me what Shikh Al Islam said in full?