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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
muslim:901g – Muʿādh Wahū Ibn Hishām from my father > Qatādah > ʿAṭāʾ b. Abū Rabāḥ > ʿUbayd b. ʿUmayr > ʿĀʾishah

" The Messenger of Allah ﷺ observed six ruku's and four prostration in (two rak'ahs)."  

مسلم:٩٠١g – وحَدَّثَنِي أَبُو غَسَّانَ الْمِسْمَعِيُّ وَمُحَمَّدُ بْنُ الْمُثَنَّى قَالَا حَدَّثَنَا مُعَاذٌ وَهُوَ ابْنُ هِشَامٍ حَدَّثَنِي أَبِي عَنْ قَتَادَةَ عَنْ عَطَاءِ بْنِ أَبِي رَبَاحٍ عَنْ عُبَيْدِ بْنِ عُمَيْرٍ عَنْ عَائِشَةَ

أَنَّ نَبِيَّ اللَّهِ ﷺ صَلَّى سِتَّ رَكَعَاتٍ وَأَرْبَعَ سَجَدَاتٍ  

See similar narrations below:

Collected by Ibn Ḥibbān, Suyūṭī

ذِكْرُ وَصْفِ صَلَاةِ الْآيَاتِ

ibnhibban:2830 – ʿUmar b. Muḥammad al-Hamdānī > Zayd b. Akhzam > Muʿādh b. Hishām from my father > Qatādah > ʿAṭāʾ > ʿUbayd b. ʿUmayr > ʿĀʾishah

[Machine] From the Prophet ﷺ , he said, "The prayer of the signs consists of six units of prayer and four prostrations."  

ابن حبّان:٢٨٣٠ – أَخْبَرَنَا عُمَرُ بْنُ مُحَمَّدٍ الْهَمْدَانِيُّ حَدَّثَنَا زَيْدُ بْنُ أَخْزَمَ حَدَّثَنَا مُعَاذُ بْنُ هِشَامٍ حَدَّثَنِي أَبِي عَنْ قَتَادَةَ عَنْ عَطَاءٍ عَنْ عُبَيْدِ بْنِ عُمَيْرٍ عَنْ عَائِشَةَ

عَنِ النَّبِيِّ ﷺ قَالَ «صَلَاةُ الْآيَاتِ سِتُّ رَكَعَاتٍ وَأَرْبَعُ سَجَدَاتٍ»