Sunan an-Nasa'i 1032

I said prayer by the side of my father and placed my hands between my knees. My father said to me: Place your hands on your knees. I repeated that (the previous act) for the second time, and he struck at my hands and said: We have been forbidden to do so and have been commanded to place our palms…

وَأُمِرْنَا أَنْ نَضْرِبَ بِالأَكُفِّ عَلَى الرُّكَبِ ‏

Narrated by Sa‘d

We have been forbidden from it and no mention of that has been made what follows it.

حَدَّثَنَا خَلَفُ بْنُ هِشَامٍ، حَدَّثَنَا أَبُو الأَحْوَصِ، ح قَالَ وَحَدَّثَنَا ابْنُ أَبِي عُمَرَ، حَدَّثَنَا سُفْيَانُ، كِلاَهُمَا عَنْ أَبِي يَعْفُورٍ، بِهَذَا الإِسْنَادِ إِلَى قَوْلِهِ فَنُهِينَا عَنْهُ ‏.‏…

I bowed and my hands were in this state, i. e. they were put together, palm to palm, and were placed between his thighs. My father said: We used to do like this but were later on commanded to place them on the knees.

رَكَعْتُ فَقُلْتُ بِيَدَىَّ هَكَذَا - يَعْنِي طَبَّقَ بِهِمَا وَوَضَعَهُمَا بَيْنَ فَخِذَيْهِ - فَقَالَ أَبِي قَدْ كُنَّا نَفْعَلُ هَذَا ثُمَّ أُمِرْنَا بِالرُّكَبِ ‏.‏

Narrated by Sa‘d