"I have seen many images like the following that portrait Lord Rama and Sita as a soul of lord Hanuman.
There's an incident describe in the later part of the Ramayana. After lord Rama came back from his vanavasa of 14 year and winning over Lanka Naresh Ravana, he was coronated as Ayodhya Naresh-The King of Ayodhya. In the celebration, precious ornaments and gifts were distributed to everyone. Hanuman was also gifted a beautiful necklace of diamond by Sita- the wife of Rama.
Hanuman took the necklace, carefully examine each and every diamond put them apart, and threw them away. Most were surprised by his behaviour.
When asked asked to why he was throwing away the precious diamonds, he replied that he couldn't find Rama is any one of them. Thus, they carried no worth to him since anything in which there is no Rama is without worth.
When asked if Lord Rama was in Hanuman is himself , he tore his chest apart to reveal his heart. The on-lookers, now convinced of his genuine devotion, saw the image of both Rama and Sita appearing on his heart.
This is incident from Ramayana which inspired me to make this poster of Lord Rama and Goddess Sita as the soul of Lord Hanuman."

This painting by young artist Harshita Narang (18 years) received Bronze medal in Khula Aasmaan Ramayana art contest.

See the short video about this artwork