The fact is that the land visited by the ascetics was never heard of before. It is an endless vista. It is there amidst the inhospitable surroundings that the nomads lie on their sides and contemplate. They search for the spiritual knowledge in an endless tract. (The spiritual realm has no limits).
Note: In this verse the poet has possibly referred to the vast range of effectiveness of the Pir of Luwari. When the latter had asked him to dissociate himself from music, Shah had pleaded that it was recorded in his destiny to do it and as such he could not over rule his fate. Thereupon the Pir of Luwari assured him that he was competent to call for his tablet from the ‘Loh Mahfuz’ and erase from it the entry concerning his attachment to music. The poet was much too bewildered to express his consent to this extraordinary proposal.

The ascetics seek that land which none has heard or seen,
On stones they lie turning from side to side,
In Infinity, Reality they try to seek.

Dothis explore the land that none has heard of or seen,
Khhahoris lie on their sides on rough rocks,
They seek true knowledge where there is infinity.