What should a husband do if his adult daughters ask not to return to his home after his irrevocable divorce from their mother, and their maternal uncle demands their support?

The preponderant opinion among jurists is that if a girl reaches the age of seven, she is entrusted to her father until she marries. What your daughters' maternal uncle did by taking them is considered a sin and an aggression, and he must return them. If he does not, one can seek help from scholars and people of good will; otherwise, resort to the competent authorities.