Sheikh Al-Albānī (may Allāh have mercy on him) said, “We need to know that the obligatory coming to rest cannot be achieved without the following:

1. Putting one’s hands on one’s knees
2. Spreading one’s fingers
3. Stretching one’s back out
4. Being still for some time in rukū’, remaining in it until every part of body assumes its position.” [Tamām Al Minnah: 189]