Saint Ramdas was Guru of Shivaji. Shivaji was the one who successfully fought against Muslims to establish Hindu kingdom in Maharashtra.
Once Saint Ramdas decided that he along with all his disciples would go on pilgrimage for about two months.
At his Ashram he used to worship idols of Ram, Sita, Laxman and Hanuman. He posed a question to his disciples, "Who will look after them?" Everyone wanted to go with him and no one wanted to stay back.
At last Ramdas told a dumb looking disciple that, "Look! We are all going to pilgrimage and you will have to stay back. You must cook food every day. Offer it to lord and after that you should eat." All other proceeded on pilgrimage.
Next day that disciple got up in morning, cleaned the room, washed the idols. Put clothes on them and offered them cooked food. He thought Ram and his family would eat the food. But to his dismay no one came. He too did not eat. For continuously seven days, he did not eat.
At last God Ram along with Sita, Laxman and Hanuman had to eat what he offered. So it continued for some days.
One day, that disciple did not get up. So God Ram went see what was the matter.
The disciple answered, "See, I make food everyday and you all eat. And now I'm very tired. Now if you want to eat, Sita should cook the food, Hanuman should bring the necessary stuff to prepare food and Laxman should clean the house. You should not do anything because you are master of my Guruji."
So everyone assumed their duties. One day Sita made a sweet dish (Khir).
The disciple started crying and said, "O! My guruji likes Khir very much I want to give it to him."
Sita said, "But how can you go there? He is far off!"
The disciple answered, "I'll sit on Hanuman's shoulder and within second he will take me there!"
So he went to his guruji. Guruji asked him "How come you are here? When did you leave Ashram?"
"I left the Ashram just now?"
"Just now?"
"Yes I came with him" and he pointed to Hanuman. Ramdas went to Hanuman.
Hanuman told him the story and said,"Please come fast to relieve us from our duties".
Guruji told everyone, "The one who you thought most dumb person is one of my best disciples!"