Is Saying Insha Allah Fard?
The link is working fine for me. But in case you are wondering, summary of the video is that MashAllah and InshAllah are just expression of our iman (that all things happen through the will of Allah and with His permission). They don’t have a real effect nor is anyone will be held accountable for not uttering them. But it is good to express your iman with these words time to time.