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:20513 – Isḥāq b. Dāwud al-Ṣawwāf > Muḥammad b. Sinān al-Qazzāz > Isḥāq b. Idrīs > Marwān b. Muʿāwiyah > ʿUbaydullāh b. ʿAbdullāh b. al-Aṣam > Yazīd b. al-Aṣam > Maymūnah

[Machine] The Prophet ﷺ used to lean on his left thigh when he sat down.  

الطبراني:٢٠٥١٣ – حَدَّثَنَا إِسْحَاقُ بْنُ دَاوُدَ الصَّوَّافُ ثنا مُحَمَّدُ بْنُ سِنَانٍ الْقَزَّازِ ثنا إِسْحَاقُ بْنُ إِدْرِيسَ ثنا مَرْوَانُ بْنُ مُعَاوِيَةَ عَنْ عُبَيْدِ اللهِ بْنِ عَبْدِ اللهِ بْنِ الْأَصَمِّ عَنْ يَزِيدَ بْنِ الْأَصَمِّ عَنْ مَيْمُونَةَ قَالَتْ

«كَانَ النَّبِيُّ ﷺ كَانَ إِذَا قَعَدَ اطْمَأَنَّ عَلَى فَخِذِهِ الْيُسْرَى»  

See similar narrations below:

Collected by Nasāʾī, Nasāʾī's Kubrá
nasai:1147 – ʿAbd al-Raḥman b. Ibrāhīm Duḥaym > Marwān b. Muʿāwiyah > ʿUbaydullāh b. ʿAbdullāh b. al-Aṣam > Yazīd b. al-Aṣam > Maymūnah

"When the Messenger of Allah ﷺ prostrated, he would hold his arms out to his sides, so that the whiteness of his armpits could be seen from behind. And when he sat he rested on his left thigh."  

النسائي:١١٤٧ – أَخْبَرَنَا عَبْدُ الرَّحْمَنِ بْنُ إِبْرَاهِيمَ دُحَيْمٌ قَالَ حَدَّثَنَا مَرْوَانُ بْنُ مُعَاوِيَةَ قَالَ حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ عَبْدِ اللَّهِ بْنِ الأَصَمِّ قَالَ حَدَّثَنِي يَزِيدُ بْنُ الأَصَمِّ عَنْ مَيْمُونَةَ قَالَتْ

كَانَ رَسُولُ اللَّهِ ﷺ إِذَا سَجَدَ خَوَّى بِيَدَيْهِ حَتَّى يُرَى وَضَحُ إِبْطَيْهِ مِنْ وَرَائِهِ وَإِذَا قَعَدَ اطْمَأَنَّ عَلَى فَخِذِهِ الْيُسْرَى  

nasai-kubra:737 – ʿAbd al-Raḥman b. Ibrāhīm Duḥaym al-Dimashqī > Marwān > ʿUbaydullāh b. ʿAbdullāh b. al-Aṣam > Yazīd b. al-Aṣam > Maymūnah

"When the Messenger of Allah ﷺ prostrated, he would hold his arms out to his sides, so that the whiteness of his armpits could be seen from behind. And when he sat he rested on his left thigh." (Using translation from Nasāʾī 1147)  

الكبرى للنسائي:٧٣٧ – أَخْبَرَنِي عَبْدُ الرَّحْمَنِ بْنُ إِبْرَاهِيمَ دُحَيْمٌ الدِّمَشْقِيُّ قَالَ حَدَّثَنَا مَرْوَانُ قَالَ حَدَّثَنَا عُبَيْدُ اللهِ بْنُ عَبْدِ اللهِ بْنِ الْأَصَمِّ قَالَ حَدَّثَنِي يَزِيدُ بْنُ الْأَصَمِّ عَنْ مَيْمُونَةَ قَالَتْ

«كَانَ رَسُولُ اللهِ ﷺ إِذَا سَجَدَ خَوَّى بِيَدَيْهِ حَتَّى يُرَى وَضَحُ إِبِطَيْهِ مِنْ وَرَائِهِ وَإِذَا قَعَدَ اطْمَأَنَّ عَلَى فَخِذِهِ الْيُسْرَى»