However, Chulla-Niddesa,

However, Chulla-Niddesa, another ancient text of the Buddhist canon substitutes Yona for Gandhara and thus lists the Kamboja and the Yona as the only Mahajanapadas from Uttarapatha[11] This shows that Kamboja had included Gandhara at the time the Chulla-Niddesa list was written by Buddhists.