The Prophet ﷺ said: When you put on (a garment) and when you perform ablution, you should begin with your right side. (Using translation from Abū Dāʾūd 4141)
قَالَ رَسُولُ اللهِ ﷺ إِذَا لَبِسْتُمْ وَإِذَا تَوَضَّأْتُمْ فَابْدَءُوا بِأَيَامِنِكُمْ وَقَالَ أَحْمَدُ بِمَيَامِنِكُمْ