Waail bin Hajar reported,

I came to the Messenger of Allah ﷺ and saw him raise his hands when he began the prayer until they were level with his shoulders, and when he intended to bow, and when he sat after the two rakats, he laid his left foot flat and kept his right foot upright, placed his right hand on his right thigh and pointed his finger in supplication, and placed his left hand on his left thigh.He said, Then I came to them the following year and saw them raising their hands inside their cloaks.

Nasai 1160

Sahih

أخبرنا محمد بن عبد الله بن يزيد المقرئ قال حدثنا سفيان قال حدثنا عاصم بن كليب عن أبيه

عن وائل بن حجر قال

أتيت رسول الله ﷺ فرأيته يرفع يديه إذا افتتح الصلاة حتى يحاذي منكبيه وإذا أراد أن يركع وإذا جلس في الركعتين أضجع اليسرى ونصب اليمنى ووضع يده اليمنى على فخذه اليمنى ونصب أصبعه للدعاء ووضع يده اليسرى على فخذه اليسرى قال ثم أتيتهم من قابل فرأيتهم يرفعون أيديهم في البرانس

النسائي 1160صحيح
Contents
Reference
Commentary
Ayat
Collection
Sunan Nasai Sughra
Book
Placing the hands between the knees in bowing
Chapter
Position of the hands when sitting for the first tashahhud
Numbering
Darussalam 1160
Nasai 1160