What is the best way to ask a father for his daughters hand in marriage? Any specific way that Ahlulbayt have recommended? What shall one say to the father?

The best way is to find a mediator for this task and if it's not possible for you then ask him allusively at a private location, not in front of people except in the case when it is necessary to ask infront of others. Try to follow the norms of the society in this regard.