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
tabarani:9974 – ʿAlī b. ʿAbd al-ʿAzīz > Aḥmad b. Yūnus > Abū Bakr b. ʿAyyāsh > Nuṣayr / Ibn Abū al-Ashʿath > Maymūn Wahū Abū Ḥamzah > Ibrāhīm > ʿAlqamah > ʿAbdullāh

[Machine] The Messenger of Allah ﷺ persisted in calling for thirty days, then he left it.  

الطبراني:٩٩٧٤ – حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ الْعَزِيزِ ثنا أَحْمَدُ بْنُ يُونُسَ ثنا أَبُو بَكْرِ بْنُ عَيَّاشٍ عَنْ نُصَيْرٍ وَهُوَ ابْنُ أَبِي الْأَشْعَثِ عَنْ مَيْمُونٍ وَهُوَ أَبُو حَمْزَةَ عَنْ إِبْرَاهِيمَ عَنْ عَلْقَمَةَ عَنْ عَبْدِ اللهِ قَالَ

«قَنَتَ رَسُولُ اللهِ ﷺ ثَلَاثِينَ يَوْمًا يَدْعُو ثُمَّ تَرَكَهُ»  

See similar narrations below:

Collected by Aḥmad
ahmad:13158 – Aswad > Abū Bakr > Ḥumayd > Anas

[Machine] The Prophet Muhammad ﷺ observed fasting for twenty days.  

أحمد:١٣١٥٨ – حَدَّثَنَا أَسْوَدُ حَدَّثَنَا أَبُو بَكْرٍ عَنْ حُمَيْدٍ عَنْ أَنَسٍ قَالَ

قَنَتَ رَسُولُ اللهِ ﷺ عِشْرِينَ يَوْمًا