Someone suspecting that a part of the neighboring land assigned as Waqf came into his land

Q: I live on a piece of land that is next to a Waqf (endowment), all of which is dedicated to Allah. Will it be sinful if I intentionally use a little of the Waqf, one hand span or cubit for example, as there are no boundaries between my land and the Waqf land? Please advise me, may Allah reward you!

A: It is obligatory for you to take precautions against taking anything from the Waqf land that is beside you. If you have doubts about anything concerning the Waqf land, you must leave it for the Waqf. You are not also allowed to plant anything on that land for yourself. The Prophet (peace be upon him) instructed saying, “Leave what makes you doubt for what does not make you doubt.” (Part No. 16; Page No. 165) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.