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.
nasai-kubra:1370Hilāl b. al-ʿAlāʾ > Ḥusayn > Zuhayr > Ibrāhīm > Mujāhid

[Machine] He told him that Sa'id had entered upon Aisha after the Prophet ﷺ had passed away, and he said: "I have grown old and I am not able to pray except while sitting. What do you think?" She replied, "I heard the Messenger of Allah ﷺ say, 'The prayer of a man while sitting is equal to half of his prayer while standing.'" Sufyan Ath-Thawri contradicted them.  

الكبرى للنسائي:١٣٧٠أَخْبَرَنِي هِلَالُ بْنُ الْعَلَاءِ قَالَ حَدَّثَنَا حُسَيْنٌ قَالَ حَدَّثَنَا زُهَيْرٌ قَالَ حَدَّثَنَا إِبْرَاهِيمُ أَنَّ مُجَاهِدًا

أَخْبَرَهُ أَنَّ السَّائِبَ دَخَلَ عَلَى عَائِشَةَ بَعْدَمَا قَبَضَ النَّبِيُّ ﷺ فَقَالَ إِنِّي قد كَبِرْتُ وَإِنِّي لَسْتُ أَسْتَطِيعُ أَنْ أُصَلِّيَ إِلَّا جَالِسًا فَكَيْفَ تَرَيْنَ فَقَالَتْ سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ «صَلَاةُ الرَّجُلِ جَالِسًا مِثْلُ نِصْفِ صَلَاتِهِ قَائِمًا» خَالَفَهُمَا سُفْيَانُ الثَّوْرِيُّ