Sahih al-Bukhari Book 46, Hadith 13
Allah's Messenger (ﷺ) said, "Whoever usurps the land of somebody unjustly, his neck will be encircled with
it down the seven earths (on the Day of Resurrection). "
A drink (milk mixed with water) was brought to Allah's Messenger (ﷺ) who drank some of it. A boy was sitting to his right, and some old men to his left. Allah's Messenger (ﷺ) said to the boy, "Do you allow me to give the rest of the drink to these people?" The boy said, "O Allah's Messenger (ﷺ)! I will not give preference to anyone over me to drink the rest of it from which you have drunk." Allah's Messenger (ﷺ) then handed the bowl (of drink) to the boy. (See Hadith No. 541).
That there was a dispute between him and some people (about a piece of land). When he told `Aisha about it, she said, "O Abu Salama! Avoid taking the land unjustly, for the Prophet (ﷺ) said, 'Whoever usurps even one span of the land of somebody, his neck will be encircled with it down the seven earths."