Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
ahmad:20427 – Bahz > Hammām > Qatādah > al-Ḥasan > Abū Bakarah

[Machine] The Prophet ﷺ said, "One of you should not say, 'I have fasted the whole Ramadan.'"  

أحمد:٢٠٤٢٧ – حَدَّثَنَا بَهْزٌ حَدَّثَنَا هَمَّامٌ أَخْبَرَنَا قَتَادَةُ عَنِ الْحَسَنِ عَنْ أَبِي بَكَرَةَ

أَنَّ النَّبِيَّ ﷺ قَالَ لَا يَقُولَنَّ أَحَدُكُمْ إِنِّي قُمْتُ رَمَضَانَ كُلَّهُ  

See similar narrations below:

Collected by Aḥmad, Suyūṭī
ahmad:4197 – Abū Aḥmad al-Zubayrī Biʾisnādih

[Machine] No one of you should say, "I am better than Yunus bin Matta."  

أحمد:٤١٩٧ – وَحَدَّثَنَاهُ أَبُو أَحْمَدَ الزُّبَيْرِيُّ بِإِسْنَادِهِ قَالَ

لَا يَقُولَنَّ أَحَدُكُمْ إِنِّي خَيْرٌ مِنْ يُونُسَ بْنِ مَتَّى  

suyuti:26467a –
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السيوطي:٢٦٤٦٧a –

"لا يَقُولَنَّ أحَدُكُمْ: إِنِّي صُمْتُ رَمَضَانَ كلَّهُ وَقمْتُه".  

[حم] أحمد [د] أبو داود [ن] النسائي [طب] الطبرانى في الكبير [هب] البيهقى في شعب الإيمان عن أبي بكرة