´It was narrated that Ibn 'Abbas said:` "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."
Hadith Referenceسنن نسائي / كتاب المواقيت / 602
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم
Hadith Takhrij«صحیح مسلم/المسافرین 6 (705)، سنن ابی داود/الصلاة 274 (1210)، وقد أخرجہ: موطا امام مالک/السفر 1 (4)، (تحفة الأشراف: 5608)، مسند احمد 1/283، 349 (صحیح)»
´It was narrated from Ibn 'Abbas that the Prophet (ﷺ) used to pray in Al-Madinah combining two prayer. Joining Zuhr and 'Asr, and Maghrib and 'Isha', when there was no fear nor rain. It was said to him:` "Why?" He said: "So that there would not be any hardship on his Ummah."
Hadith Referenceسنن نسائي / كتاب المواقيت / 603
Hadith Gradingالألبانی:سكت عنه الشيخ | زبیر علی زئی:صحيح مسلم