Urdu footnote: "Special guests"—this is an honor that has been granted to them for setting out in the path of Allah and enduring hardships and sufferings.
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 2626
´Abu Hurairah said:` "The Messenger of Allah (ﷺ) said: 'The guests of Allah, the Mighty and Sublime, are three: The warrior, the pilgrim performing Hajj, and the pilgrim performing 'Umrah.'"
Hafiz Muhammad Ameen
(1) Since these three spend their wealth purely for the sake of Allah’s pleasure and endure the hardships of a long journey, they have been referred to as the guests of Allah. The purpose is to indicate that Allah is very pleased with them.
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 3123