'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)  

عَنِ النَّبِيِّ ﷺ قَالَ لاَ يَقُولَنَّ أَحَدُكُمْ صُمْتُ رَمَضَانَ وَلاَ قُمْتُهُ كُلَّهُ وَلاَ أَدْرِي كَرِهَ التَّزْكِيَةَ أَوْ قَالَ لاَ بُدَّ مِنْ غَفْلَةٍ وَرَقْدَةٍ اللَّفْظُ لِعُبَيْدِ اللَّهِ  

"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."  

قَالَ رَسُولُ اللَّهِ ﷺ لاِمْرَأَةٍ مِنَ الأَنْصَارِ إِذَا كَانَ رَمَضَانُ فَاعْتَمِرِي فِيهِ فَإِنَّ عُمْرَةً فِيهِ تَعْدِلُ حَجَّةً