The Messenger of Allah ﷺ said, "One of you deliberately drops down in his prayer the way a camel kneels."
أخبرنا قتيبة قال حدثنا عبد الله بن نافع عن محمد بن عبد الله بن حسن عن أبي الزناد عن الأعرج
قال رسول الله ﷺ يعمد أحدكم في صلاته فيبرك كما يبرك الجمل
[Its chain is hasan] Recorded by Abu Dawud in the Book of Prayer, chapter on how one places his knees before his hands, no. 841, and Tirmidhi, Book of Prayer, another chapter of the same, no. 269, from Qutayba with this wording, and it is also in the Kubra, no. 677. Tirmidhi said, "Gharib." Abdull-Haq Ishbili graded it sahih, and Nawawi and others confirmed its strength. It has corroborating narrations in Ibn Khuzayma, Hakim, and others. See the following hadith (1093).