With this hadith, he said, "When he prostrated, he kept his thighs apart, not resting his belly on any part of his thighs."
حدثنا عمرو بن عثمان حدثنا بقية حدثني عتبة حدثني عبد الله بن عيسى عن العباس بن سهل الساعدي
بهذا الحديث قال وإذا سجد فرج بين فخذيه غير حامل بطنه على شيء من فخذيه
No references are available.
[Sahih] Bayhaqi narrated it in 2/115 from the hadith of Abu Dawud, with the same wording. His statement, "Abdullah bin Isa," is a mistake, and the correct form is "Isa bin Abdullah," as narrated by Tahawi in 1/260, affirming the raising of the hands before ruku and after it.