It was narrated that Abu Hurairah said

Abu Huraira (RA), the companion whose name is given as Abd al-Rahman ibn Sakhr al-Dawsi (according to the most accepted view), embraced Islam and immediately dedicated himself to maximizing his time with the Prophet ﷺ in a way that distinguished him from other companions. While many companions had families, businesses, and other obligations that limited their time with the Prophet ﷺ, Abu Huraira (RA) was free of these attachments and could attend every gathering, every prayer, and every occasion where the Prophet ﷺ spoke. He himself articulated this: the Muhajirun were busy with trading in the markets, and the Ansar with their fields, while he remained with the Prophet ﷺ hungry but present. His famous narration of the Prophet's ﷺ instruction about spreading knowledge — 'Convey from me even if it be one verse' — reflects the spirit with which he approached transmission. He narrated on every conceivable topic: theology, prayer, fasting, charity, manners, family life, the signs of the Last Day, the characteristics of hypocrisy, and the nature of paradise and hellfire. After the Prophet's ﷺ death he was a principal teacher in Medina, giving public lessons and ensuring that whoever came seeking knowledge left satisfied. The entire structure of classical hadith literature would be substantially diminished without his contribution.