Lanka to Ayodhya to Nepal

अपि स्वर्णमयी लङ्का न मे लक्ष्मण रोचते । 
जननी जन्मभूमिश्च स्वर्गादपि गरीयसी ।।

After defeating Ravana, and freeing Sita, Lord Rama established Vibhishana as the ruler of Lanka.
Rama's younger brother, Lakshmana, requested him to stay for some more time in Lanka, as it was such a beautiful city.
Rama replied that he was not tempted to tarry there. He did not like (न मे रोचते) Lanka (लङ्का) , even though it was filled with gold (अपि स्वर्णमयी), and very wonderful.

In Rama's view, ones's mother and one's motherland (जननी जन्मभूमिश्च), were both superior to even heaven (स्वर्गादपि गरीयसी).

So how could a mere earthly city like Lanka keep him from returning to Ayodhya ?

The coat of arms of Nepal was changed in December, 2006, to include the flag of Nepal, Mount Everest, green hills, etc., plus a white silhouette in the shape of Nepal. The national motto of Nepal, though, written on the earlier coat of arms, was retained in the new one too.

It is-" जननी जन्मभूमिश्च स्वर्गादपि गरीयसी l "! 

Lakshmana saves sita : (as per nepalese version ) in the the forest exile supernakha saw lord rama and was enchanted by his beauty but seeing sita she got angry and waited for the right oppurtunity here sita had seen a bad dream tht an ogre had come to eat her but rama consoled her and said she should not worry coz he and lakshmana are there to protect hearing this sita is relived next day she asked lakshmana to show her the path to river godavari and they both leave...lakshmana led her to river and then he goes to collect the fruits and flower supernkha found lord rama all alone and approched rama in guise of sita...then she embraced lord rama and lord rama thought tht she is real sita ...she asked lord rama to hold her tightly lord rama was perplexed by her behaviour ...in the meantime the real sita arrived in the cottage supernakha quickly asked lord rama to protect her and said tht the real sita was an ogres and came there to eat her...lord rama believed supernakha as sita and attempts to kill real sita who he thinks is a ogres...sita called lakshmana for help lakshmana arrives at the spot though he cant recognize the real sita but he stopped lord rama from killing the persumed ogres lakshmana then got an idea he tests sita and supernakha by saying the one who brings the parijata flower is the real sita... the real sita fainted as she didnt know where she could find the real parijata flower... whereas supernaha possesed supernatural power she through her power came to know tht the flower bloom in heaven only... she quickly excused herself and rushed outside the cottage she flew to heaven and brought the praijata flower...then lakshmana held her and said only ogres or one who possessed supernatural power could know where the flower flourished ...supernakha grew angry and resumed her original form and ran to kill sita but lakshmana stood before sitamaa and mutilated her...

https://books.google.co.in/books?id=G4pgM3birUwC&printsec=frontcover#v=onepage&q&f=false