"Why?" He said: "So that there would not be any hardship on his Ummah."
Sunan an-Nasa'i Book 6, Hadith 109
← Previous Hadith "The Messenger of Allah (ﷺ) prayed Zuhr and 'Asr together, and Maghrib and 'Isha' together, when there was no fear and he was not traveling."

Sunan an-Nasa'i Book 6, Hadith 108 Next Hadith → "I prayed behind the Messenger of Allah (ﷺ) eight (Rak'ahs) together and seven (Rak'ahs) together."

Sunan an-Nasa'i Book 6, Hadith 110