'I fasted Ramadan' or 'I prayed Qiyam throughout the whole month."' I do not know whether he dislike self-praise or he said: "Inevitably there will be heedlessness and sleep." (Da 'if) (Using translation from Nasāʾī 2109)  

عَنِ النَّبِيِّ ﷺ قَالَ «لَا يَقُولَنَّ أَحَدُكُمْ صُمْتُ رَمَضَانَ وَلَا قُمْتُهُ كُلَّهُ» فَلَا أَدْرِي كِرَهَ التَّزْكِيَةَ أَوْ قَالَ لَا بُدَّ مِنْ غَفْلَةٍ وَرَقْدَةٍ اللَّفْظُ لِعُبَيْدِ اللهِ  

"The Messenger of Allah said to a woman from among the Ansar: 'When it is Ramadan, perform 'Umrah then, for 'Umrah during it is equivalent to Hajj." (Using translation from Nasāʾī 2110)  

قَالَ نَبِيُّ اللهِ ﷺ لِامْرَأَةٍ مِنَ الْأَنْصَارِ «إِذَا كَانَ رَمَضَانُ فَاعْتَمِرِي فِيهِ فَإِنَّ عُمْرَةً فِيهِ تَعْدِلُ حَجَّةً»