Sunan Abi Dawud 958
سنن أبي داود#958Sahihحَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ، عَنْ مَالِكٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ الْقَاسِمِ، عَنْ عَبْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، قَالَ سُنَّةُ الصَّلاَةِ أَنْ تَنْصِبَ، رِجْلَكَ الْيُمْنَى وَتَثْنِيَ رِجْلَكَ الْيُسْرَى .
Abdullah bin 'Umar said:"A Sunnah of the prayer is that you should raise your right foot, and make your left foot lie (on the ground)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Bukhari (827)
In-book reference: 2:569