https://en.wikipedia.org/wiki/Lahore
The origin of Lahore's name is unclear. Lahore's name has been variously recorded by early Muslim historians as Luhawar, Lūhār, and Rahwar. The Iranian polymath and geographer, Abu Rayhan Al-Biruni, referred to the city as Luhāwar in his 11th century work, Qanun, while the poet Amir Khusrow, who lived during the Delhi Sultanate period, recorded the city's name as Lāhanūr.