(56) باب وَصِيَّةِ النَّبِيِّ صلى الله عليه وسلم بِأَهْلِ مِصْرَ
Abu Dharr reported Allah's Messenger (ﷺ) as saying:
You would soon conquer Egypt and that is a land which is known (as the land of al-qirat). So when you conquer it, treat its inhabitants well. For there lies upon you the responsibility because of blood-tie or relationship of marriage (with them). And when you see two persons falling into dispute amongst themselves for the space of a brick, than get out of that. He (Abu Dharr) said: I saw Abd al-Rahman b. Shurahbil b. Hasana and his brother Rabi'a disputing with one another for the space of a brick. So I left that (land).
Reference: Sahih Muslim 2543 b
In-book reference: Book 44, Hadith 323
USC-MSA web (English) reference(deprecated numbering scheme): Book 31, Hadith 6174