Sunan al-Nasa'i The Book of Fasting Hunayda bin Khalid Shayban bin 'Abdur Rahman شيبان بن عبد الرحمن النحوي أبو معاوية Wadah bin 'Abdullah al-Yashkari وضاح بن عبد الله اليشكري أبو عوانة “When the Messenger of Allah would lie down, he would place his right hand under his right cheek, and he used to fast on Mondays and Thursday.” https://parallelquran.com/hadith/sunan-al-nasai-2372/ Sunan al-Nasa'i The Book of Fasting Abu Bakr bin al-Nadr bin Abi al-Nadr أبو بكر بن النضر بن أبي النضر Abu Ishaq al-'Ashj'y al-Kwfy أبو إسحاق الأشجعي الكوفي Amr bin Qays al-Mala'i عمرو بن قيس الملائي Hafsa bint Umar Hunayda bin Khalid “I heard the Messenger of Allah say: ‘It is a good fast to fast three days of each month”. https://parallelquran.com/hadith/sunan-al-nasai-2416/ Sunan al-Nasa'i The Book of Fasting al-Fadl bin Dakayn, Abu Na'eem الفضل بن دكين أبو نعيم الملائي Hunayda bin Khalid Wadah bin 'Abdullah al-Yashkari وضاح بن عبد الله اليشكري أبو عوانة “Uthman bin Abi Al-As” and he narrated something similar in Mursal form. https://parallelquran.com/hadith/sunan-al-nasai-2417/ Sunan al-Nasa'i The Book of Fasting Abdur Rahman bin Mahdi عبد الرحمن بن مهدي Hunayda bin Khalid Muhammad bin 'Uthman bin Abi Safwan محمد بن عثمان بن أبي صفوان Wadah bin 'Abdullah al-Yashkari وضاح بن عبد الله اليشكري أبو عوانة “I heard Ibn ‘Umar say” “The Prophet used to fast three days of each month. https://parallelquran.com/hadith/sunan-al-nasai-2418/ Sunan Abi Dawud Fasting (Kitab Al-Siyam) al-Hur bin al-Sabah الحر بن الصباح النخعي Hunayda bin Khalid Masdad bin Masrhad مسدد بن مسرهد بن مسربل Wadah bin 'Abdullah al-Yashkari وضاح بن عبد الله اليشكري أبو عوانة Sahih The client of Usamah ibn Zayd said that he went along with Usamah to Wadi al-Qura in pursuit of his camels. He would fast on Monday and Thursday. His client said to him: Why do you fast on Monday and Thursday, while you are an old man? He said: The Prophet of Allah (ﷺ) used to fast on Monday and Thursday. When he was asked about it, he said: The works of the servants (of Allah) are presented (to Allah) on Monday and Thursday. https://parallelquran.com/hadith/sunan-abi-dawud-2436/