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.
ahmad:27463ʿAbd al-Razzāq > Maʿmar > Wāṣil a freed slave of Abū ʿUyaynah > Mūsá b. ʿUbaydah > Ṣafiyyah b. Shaybah > Āmraʾah

[Machine] She heard the Prophet ﷺ saying between Safa and Marwa, "Sa'y has been prescribed upon you, so perform Sa'y."  

أحمد:٢٧٤٦٣حَدَّثَنَا عَبْدُ الرَّزَّاقِ أَخْبَرَنَا مَعْمَرٌ عَنْ وَاصِلٍ مَوْلَى أَبِي عُيَيْنَةَ عَنْ مُوسَى بْنِ عُبَيْدَةَ عَنْ صَفِيَّةَ بِنْتِ شَيْبَةَ أَنَّ امْرَأَةً أَخْبَرَتْهَا

أَنَّهَا سَمِعَتِ النَّبِيَّ ﷺ بَيْنَ الصَّفَا وَالْمَرْوَةِ يَقُولُ كُتِبَ عَلَيْكُمُ السَّعْيُ فَاسْعَوْا