‘A’isha reported Allah’s Messenger, may peace be upon him, as saying: “Every one of the children of Adam has been created with three hundred and sixty joints” [narrated by Muslim]
So he who declares the glory of Allah, praises Allah, declares Allah to be One, glorifies Allah, and seeks forgiveness from Allah, and removes stone, or thorn, or bone from people’s path, and enjoins what is good and forbids from evil, to the number of those three hundred and sixty, will walk that day having removed himself from Hell.
Buraida narrated that he heard Allah’s messenger says: “Everyone has three hundred and sixty joints, so s/he has to give charity for each one of them.” It was said (to him): “O Messenger of Allah, who can afford that?” “You can bury the mucus that you may find in the mosque; or remove stone, thorn, or bone from people’s path. If you did not afford that, then two Rakaat at Ad-Duha (morn) are enough.” The prophet replied”. [Approved by Al-Albany]
That prophet, peace be upon him, said that there are three hundred and sixty joints in the human body. He declared that when it was impossible to know this number by such accuracy, because most of these joints are fine and in positions where it is hard to notice. These fine joints were not known before the advance of anatomy and histology. The prophet, peace be upon him, talked about the number of the joints fourteen centuries ago, and the modern science approved his saying. This is another miracle of the miracles of the revelation that nobody knew at the period of the prophet peace be upon him.
Allah almighty says: “Does He who created not know, while He is the Subtle, the Acquainted?” [Al-Mulk 67:14]