Permissibility of combining prayers without being fearful or in travel
The Messenger of Allah ﷺ observed the noon and afternoon prayers together, and the sunset and Isha' prayers together without being in a state of fear or in a state of journey.
صَلَّى رَسُولُ اللَّهِ ﷺ الظُّهْرَ وَالْعَصْرَ جَمِيعًا وَالْمَغْرِبَ وَالْعِشَاءَ جَمِيعًا فِي غَيْرِ خَوْفٍ وَلاَ سَفَرٍ