Combining Two Prayers While A Resident

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."

أَخْبَرَنَا قُتَيْبَةُ، عَنْ مَالِكٍ، عَنْ أَبِي الزُّبَيْرِ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ صَلَّى رَسُولُ اللَّهِ ﷺ الظُّهْرَ وَالْعَصْرَ جَمِيعًا وَالْمَغْرِبَ وَالْعِشَاءَ جَمِيعًا مِنْ غَيْرِ خَوْفٍ وَلاَ سَفَرٍ .

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."

أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الْعَزِيزِ بْنِ أَبِي رِزْمَةَ، - وَاسْمُهُ غَزْوَانُ - قَالَ حَدَّثَنَا الْفَضْلُ بْنُ مُوسَى، عَنِ الأَعْمَشِ، عَنْ حَبِيبِ بْنِ أَبِي ثَابِتٍ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ النَّبِيَّ ﷺ كَانَ يُصَلِّي بِالْمَدِينَةِ يَجْمَعُ بَيْنَ الصَّلاَتَيْنِ بَيْنَ الظُّهْرِ وَالْعَصْرِ وَالْمَغْرِبِ وَالْعِشَاءِ مِنْ غَيْرِ خَوْفٍ وَلاَ مَطَرٍ . قِيلَ لَهُ لِمَ قَالَ لِئَلاَّ يَكُونَ عَلَى أُمَّتِهِ حَرَجٌ .