mr saif, its ok that u have become atheist, its ur personal decision & i m not going to comment on it. first of all let me tell u that linga means male external reproductive organ (P*N*S). According to shiv puran when lord shiva was doing dhyan, Indra the head of all devas worried about his portfolio & send urvashi & menka to distort shiva from his dhyan when menka & urvashi started sexual dance in front of shiva he order his organ to go & screw both menka & urvashi started flying to devlok, & shiva's organ was keep on increasing & chasing them from there lord vishnu was moving & he saw the scenario & got worried, he threw his chakra & cut that organ in 16 pieces which droped on earth, called as jyotirlinga, one of them is amarnath. This is hindu mythology, all pieces dropped in india only & all jyotirlinga is inindia only, so according to sacred books of hindus there is no proof that kaba has any shivling we muslims never worship stone or any organ or any object except one god The stone (sang-i-aswat) is precious because it is used in kaba by prophet & by giving ur quote of sahi bukhari it is clear that it is merely a stone nothing else