ذِكْرُ الزَّجْرِ عَنْ قَوْلِ الْمَرْءِ: صُمْتُ رَمَضَانَ كُلَّهُ حَذَرَ تَقْصِيرٍ لَوْ كَانَ وَقَعَ فِي صَوْمِهِ
The Prophet ﷺ said: One of you should not say: I fasted the whole of Ramadan, and I prayed during the night in the whole of Ramadan. I do not know whether he disliked the purification; or he (the narrator) said: He must have slept a little and taken rest. (Using translation from Abū Dāʾūd 2415)
عَنِ النَّبِيِّ ﷺ قَالَ «لَا يَقُولَنَّ أَحَدُكُمْ إِنِّي صُمْتُ رَمَضَانَ كُلَّهُ وَقُمْتُهُ» قَالَ فَلَا أَدْرِي أَكَرِهَ التَّزْكِيَةَ أَمْ قَالَ «لَا بُدَّ مِنْ رَقْدَةٍ أَوْ غَفَلَةٍ»