(20) باب الْكَلاَمِ فِي الصَّلاَةِ
It was narrated from Abu Hurairah that:
A Bedouin entered the masjid and prayed two rak'ahs, then he said: "O Allah, have mercy on me and on Muhammad and do not have mercy on anyone else." The Messenger of Allah (ﷺ) said: "You have limited something vast." (FR)
Reference (FR): Sunan an-Nasa'i 1217 (FR)
In-book reference (FR): Book 13, Hadith 39 (FR)
English translation (FR): Vol. 2, Book 13, Hadith 1218 (FR)