Hadithcore
Sunan Abi Dawud, 947
sahih· Al-Albani

Abu hurairah said that the Messenger of Allah (ﷺ) forbade putting hands on the waist during prayer. Abu Dawud said; The word Ikhtisar means to put one’s hands on one’s waist.

حَدَّثَنَا يَعْقُوبُ بْنُ كَعْبٍ، حَدَّثَنَا مُحَمَّدُ بْنُ سَلَمَةَ، عَنْ هِشَامٍ، عَنْ مُحَمَّدٍ، عَنْ أَبِي هُرَيْرَةَ، قَالَ نَهَى رَسُولُ اللَّهِ صلى الله عليه وسلم عَنْ الاِخْتِصَارِ فِي الصَّلاَةِ ‏.‏ قَالَ أَبُو دَاوُدَ يَعْنِي يَضَعُ يَدَهُ عَلَى خَاصِرَتِهِ ‏.‏

References2 variants
In-Book Reference
Book 2, Hadith 558
English Reference
Book 2, Hadith 947
Sharh · explanationclick to expand
Prayer is a tremendous act of worship. The servant must stand in it before his Lord and Master in the posture of one who is humble and fully devoted. Glorifying and sanctifying Allah is mandatory therein, and one must avoid disgraceful and blameworthy postures during prayer.In this Hadith, Abu Hurayrah (may Allah be pleased with him) said: “The Messenger of Allah (peace and blessings of Allah be upon him) forbade Ikhtisar in prayer.” And in another narration: “It is prohibited to place the hands on the waist during the prayer.” Ikhtisar refers to placing the hand on the waist — whether one hand or both — on one or both sides of the body. Ibn `Umar (may Allah be pleased with him) said in one narration: “This is crucifixion, and the Messenger of Allah (peace and blessings of Allah be upon him) forbade us from it.”This Hadith contains a prohibition against resembling the Jews and the Christians..