InLaws problem. My child with them?

Hi, my husband is always on weed and lately when rules have become strict in the city he couldn't get and started acting very strange. He shouts all fowl language and also threatened me also tried to attack me physically. We live in a combined family and all this drama unfolds in front of their parents and we seem to constantly fight. But the truth is he is constantly fighting and arguing and shouting on top of his voice. For everything he grabs our child and begins to shout. Inlaws cannot correct him. He ask me to leave our child with them and go away. From 3-4 days my inlawshave started to make my child sleep with them. Is it right to leave my child with them? He is 2.9 yr old. I go for library from mrng 10 to evng 6 and he is left with them. Mrng I feed him a nd cook dishes for lunch. I also feed him in the evng. But now he is not sleeping with me anymore and I don't know with the prevailing condition of their obsession should i let him sleep with them.