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.
ahmad:13650ʿAffān > Ḥammād > Thābit > Anas

[Machine] The Prophet Muhammad ﷺ used to fast until it was said that he had fasted, and he would break his fast until it was said that he had broken his fast. He once said "Fast, fast, fast."  

أحمد:١٣٦٥٠حَدَّثَنَا عَفَّانُ حَدَّثَنَا حَمَّادٌ قَالَ أَخْبَرَنِي ثَابِتٌ عَنْ أَنَسٍ

أَنَّ رَسُولَ اللهِ ﷺ كَانَ يَصُومُ حَتَّى يُقَالَ قَدْ صَامَ وَيُفْطِرُ حَتَّى يُقَالَ قَدْ أَفْطَرَ وَقَدْ قَالَ مَرَّةً أَفْطَرَ أَفْطَرَ أَفْطَرَ  


See similar narrations below:

Collected by Muslim, Aḥmad
muslim:1158[Chain 1] Zuhayr b. Ḥarb And Ibn Abū Khalaf > Rawḥ b. ʿUbādah > Ḥammād > Thābit > Anas [Chain 2] Abū Bakr b. Nāfiʿ > Bahz > Ḥammād > Thābit > Anas

Anas (Allah be pleased with him) reported that the Messenger of Allah ﷺ used to observe fast till it was said that he had observed fast, he had observed fast (perhaps never to break it), and he did not fast till it was said that he had given up fast, he had given up fast (perhaps never to observe it).  

مسلم:١١٥٨وَحَدَّثَنِي زُهَيْرُ بْنُ حَرْبٍ وَابْنُ أَبِي خَلَفٍ قَالاَ حَدَّثَنَا رَوْحُ بْنُ عُبَادَةَ حَدَّثَنَا حَمَّادٌ عَنْ ثَابِتٍ عَنْ أَنَسٍ ؓ ح وَحَدَّثَنِي أَبُو بَكْرِ بْنُ نَافِعٍ وَاللَّفْظُ لَهُ حَدَّثَنَا بَهْزٌ حَدَّثَنَا حَمَّادٌ حَدَّثَنَا ثَابِتٌ عَنْ أَنَسٍ ؓ

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يَصُومُ حَتَّى يُقَالَ قَدْ صَامَ قَدْ صَامَ وَيُفْطِرُ حَتَّى يُقَالَ قَدْ أَفْطَرَ قَدْ أَفْطَرَ  

ahmad:13174Rawḥ > Ḥammād > Thābit > Anas b. Mālik

[Machine] The Prophet ﷺ used to fast until it was said that he had fasted, and he would break his fast until it was said that he had broken his fast.  

أحمد:١٣١٧٤حَدَّثَنَا رَوْحٌ حَدَّثَنَا حَمَّادٌ عَنْ ثَابِتٍ عَنْ أَنَسِ بْنِ مَالِكٍ

أَنَّ النَّبِيَّ ﷺ كَانَ يَصُومُ حَتَّى يُقَالَ وقَدْ صَامَ وَيُفْطِرُ حَتَّى يُقَالَ قَدْ أَفْطَرَ