‘Do not anticipate Ramadan by fasting one or two days before, except for a man who has a habitual pattern of fasting, in which case let him fast.” (Using translation from Ibn Mājah 1650)

أَنَّ رَسُولَ اللهِ ﷺ قَالَ لَا تَقَدَّمُوا بَيْنَ يَدَيْرَمَضَانَ بِيَوْمٍ وَلَا يَوْمَيْنِ إِلَّا رَجُل كَانَ يَصُومُ صَوْمًا فَلْيَصُمْهُ