Shri Ramadasa Charitam III Vol III Book VIII Chp 14 Shlokas 8 - 9
कक्ष्चिदासीन्महायोगी रामदास इति श्रुतः |
दृढव्रतो ब्रह्मचारी ज्ञानी वैराग्यभूषनः |
आञ्जनेयावतारोsयं रामभक्तिमतं वरः |
बाल्ये गृहाद्विनिर्गत्य चकार सुमहत्तपः ||
There was a yogi named Ramada's who a brahmachari. He was a man of wisdom and had a withdrawn attitude as the jewel adorning him. He was very firm too. A partial incarnation of Shri Hanuman, he was a noted devotee of Shri Rama. Even when he was very young, he renounced the family and did penance in the forest.
