Seeking healing from mineral waters and slaughtering lambs at that spot
Question

                In the south of Jordan there are mineral waters at a place called the Well of Sulaymaan ibn Dawood. People go there to bathe and for healing, and they bring with them animals to slaughter when they get there. What is the ruling on slaughtering animals like this?
Praise be to Allah.If the waters have been tried and tested, and they are 
          beneficial in the case of some diseases, then there is nothing wrong 
          with that, because Allaah has created some benefits for some sicknesses 
          in some waters. If it is known from experience that these waters ate 
          beneficial for those who are suffering from certain diseases, such as 
          rheumatism, etc., there is nothing wrong with that. 
 With regard to slaughtering animals, this comes under 
          various categories:  
If the animals are slaughtered to meet the people’s need 
          for food, etc., or to feed any guests that come to them, there is nothing 
          wrong with that. If they are slaughtered for any other purpose, such 
          as to draw closer to the water or the jinn or the Prophets, or on the 
          basis of some false belief, then that is not permissible, because Allaah 
          says, addressing His Prophet  (peace 
          and blessings of Allaah be upon him) (interpretation of the meaning): 
          
“Say 
          (O Muhammad): ‘Verily, my Salaah (prayer), my sacrifice, my living, 
          and my dying are for Allaah, the Lord of the ‘Aalameen (mankind, jinn 
          and all that exists). 
He has no partner. And of this 
          I have been commanded, and I am the first of the Muslims’” [al-An’aam 
          6:162-163] 
 “Verily, 
          We have granted you (O Muhammad) al-Kawthar (a river in Paradise); 
Therefor turn in prayer to your 
          Lord and sacrifice (to Him only)” 
[al-Kawthar :1-2] 
So 
          animals should be slaughtered only for Allaah and sacrifices should 
          be offered only to Allaah. The same applies to all other acts of worship 
          – they should be dedicated only to Allaah alone. It is not permissible 
          to do any of these things for anything other than Allaah, because Allaah 
          says (interpretation of the meanings): 
 “And they were 
          commanded not, but that they should worship Allaah, and worship none 
          but Him Alone (abstaining from ascribing partners to Him)…” [al-Bayyinah 
          :5] 
 “So 
          worship Allaah (Alone) by doing religious deeds sincerely for Allaah’s 
          sake only. 
Surely, the religion (i.e. the 
          worship and the obedience) is for Allaah only” [al-Zumar 
          39:2-3] 
and because of the aayaat 
          quoted above and other similar verses. And the Prophet  
          (peace and blessings of Allaah be upon him) said: “Allaah has cursed 
          those who offer sacrifices to anyone other than Allaah” (narrated by 
          Muslim in his Saheeh, 
          from the hadeeth of ‘Ali, may Allaah be pleased with him).
 So no one is allowed to offer sacrifices to the jinn 
          or to a certain star or planet, or to certain waters, or to a certain 
          Prophet, or to any person, or to idols. Worship is only for Allaah, 
          and we should seek to draw closer to Him alone through sacrifices and 
          prayers, and all other kinds of worship, because Allaah says (interpretation 
          of the meaning):   
“You 
          (Alone) we worship, and You (Alone) we ask for help (for each and everything)” 
          [al-Faatihah 
          1:5] 
 and because of the verses quoted above (interpretation 
          of the meanings); 
“And they were 
          commanded not, but that they should worship Allaah, and worship none 
          but Him Alone (abstaining from ascribing partners to Him)…” al-Bayyinah 
          :5] 
 “So 
          worship Allaah (Alone) by doing religious deeds sincerely for Allaah’s 
          sake only. 
Surely, the religion (i.e. the 
          worship and the obedience) is for Allaah only” [al-Zumar 
          39:2-3] 
and other aayaat. 
Sacrifice is one of the most important and one of the best 
          acts of worship, so it must be done sincerely for Allaah Alone, because 
          of the aayaat that we have mentioned, and because the Prophet  
          (peace and blessings of Allaah be upon him) said, as we quoted above, 
          “Allaah has cursed those who offer sacrifices to anyone other than Allaah.”