This gurudwara is located in Talwandi Sabo, which also has one of the five takhts of Sikhs (Takht is a temporal and spiritual seat). It is here that the final version of Adi Granth ( now known as Guru Granth Sahib) was compiled by Guru Gobind Singh ji. This place was a confluence of scholars and a seat of learning ( the reason it is also known as the Kashi of sikhs)
It is said that there used to be a pond here where Guruji threw all the reeds and left over ink after the writing of Guru Granth Sahib. Thus blessed, it came to be known as Gurudwara Likhansar sahib. (Likhan-writing and sar-sarovar or pond)

(Above Text sent by Gurpreet Singh ji on Facebook and he thanked Gurpreet Singh Rana Veerji)

My Experiences of visiting

‪”Here we will create a pool of literature. No one of my Sikhs should remain illiterate.” ‬
‪Gurudwara Lekhensar Sahib‬
‪Blessed by Guru Govind Singh ji. The reed pens and ink left over from writing the Granth Sahib mixed in the sarovar.
I also sat and wrote some alphabets.