What boon did Lord Rama give to Hanuman?

What boon did Lord Rama give to Hanuman? After conquering Lanka, Lord Rama was sitting with his family members in Ayodhya. Shriram was getting emotional remembering the help done by Hanumanji. He said, 'Hanuman helped me in times of trouble, but I didn't give him anything.' He told Hanumanji, I gave the kingdom of Lanka to Vibhishan. Sugriva was made the king of Kishkindha and Angad was made the crown prince. Today I want to give you something too. That's why you can ask for desired groom. Hanumanji was the embodiment of selfless devotion. He humbly said to Shriram, Lord you love me very much. You have infinite grace on me. What will I do by asking for more? But Shriram was eager to give something or the other to Hanumanji that day. Suddenly Hanumanji said that, God you have given one post (step) to everyone. Can you give me the position too? Shri Ram could not understand anything, yet he said, Hanuman, which post do you want? Hanumanji got up from his place and held the feet of Lord Rama. Hanumanji said, I should keep serving these two posts every moment, this is the boon I need. Tears started flowing from Shri Ram's eyes and he hugged Shri Hanuman ji and gave him a boon that he should continue to serve him throughout his life.