"U never saw the Messenger of Allah fast two consecutive months, but he used to join shaban to Ramadan." ' (Using translation from Nasāʾī 2175)  

«مَا رَأَيْتُ رَسُولَ اللهِ ﷺ يَصُومُ شَهْرَيْنِ مُتَتَابِعَيْنِ إِلَّا أَنَّهُ كَانَ يَصِلُ شَعْبَانَ بِرَمَضَانَ»