I want to know what is the best thing we can tell to someone who pratice the Dhamma to becomes a buddha or one of his disciples ? I know a monk who told me he want to becomes a buddha. He pratice the paramis for this purposes. He is a good teacher for me. I also know a layman who pratice the dhamma to be a monk disciple of lord buddha Metteya. What can i tell to them? Did i encourage them or i try to convinced them to pratice until arahant stage in buddha Gautama’s sasana ?
What you should do is encourage anyone to learn Buddha Dhamma.
Whether anyone can even be a Sotapanna depends on that person’s abilities.
Each person will make progress in their own way. Of course, one may become a Buddha if one cultivates all the requirements; that usually takes a long time, certainly not within this life or even within this eon (Maha Kappa) because the next Buddha to appear (Buddha Maitreya) is already in the TusitaDeva realm.
But there could be a few Bodhisattas in the process of fulfilling those capabilities.