The seven-year-old victim had gone to Lohgarh village yesterday to visit a fair along with his maternal grandfather.
Later, the boy, accompanied by the accused on his return to his native place in Badduwal village, was sodomised by them.
Later, after he revealed his ordeal to his parents, a compalint was lodged against the duo, identified as Paramjit Singh and Jaswant Singh, and they were subsequently arrested.
Further probes are on, police added.