Sunan Abi Dawud 947
سنن أبي داود#947SahihAbu hurairah said that the Messenger of Allah (May peace be upon him) forbade putting hands on the waist during prayer. Abu Dawud said; The word Ikhtisar means to put one’s hands on one’s waist
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 (1220) Sahih Muslim (545)
In-book reference: 2:558