اللَّهُمِّ إنِّي أسْألُكَ بأنَّ لكَ الحَمْدَ لا إلهَ إلاَّ أنتَ وْحَدكَ لا شَريكَ لكَ، الحنَّانُ المَّنَّانُ يا بَديعُ السمواتِ والأرْضِ ياذا الجلالِ والإكْرِامِ يا حَيُّ يا قَيُّومُ يَا أرْحَمَ الرَّاحمينَ
There is a hidden healing in the combination of spittle & dust' with Duaa of Prophet Muhammad Sallallaho Alaihe Wasallam.
Some believe that it was peculiar only to our beloved Prophet and was indeed his miracle because the particular dust was of Al-Madinah's soil with the Prophet's spittle being of a unique quality. But Hafiz Ibn Hajar Asqalani differs from this view. Spittle and dust, according to him, are simply external means and the curative effect in them comes from Allah Alone. It is for the entire Ummat-e-Muhammad & it can be used by all Muslims (with any soil / sand) living anywhere in the world.
Prophet's Guidance in treating ulcer and various wounds
أخرجا فى "الصحيحين" عن عائشة قالت: "كان رسول الله صلى الله عليه وسلم إذا اشتكى الإنسانُ أو كانت به قَرحةٌ أو جُرحٌ، قال بأصبعه: هكذا ووضع سفيانُ سبَّابَتَهُ بالأرض، ثم رفعها وقال: "بسْمِ اللهِ، تُرْبَةُ أرضِنا بِرِيقَةِ بعضِنا، يُشْفَى سَقِيمُنا بإذنِ رَبِّنا".
In the two sound books (Sahihain) is narrated that Ayesha Radi Allaho Anha said:
‘Whenever a person would complain from an ulcer (or a canker), or a wound, the Messenger of Allah would put his finger in the soil (on the ground after inserting it in his mouth, then raise it) saying, "In the Name of Allah, with the soil of our earth has got a moisture with the saliva of some of us, let our sick be cured, with our Lord’s permission".
This is an easy, beneficial cure for the various ulcers and fresh wounds, especially when there is no available medicine. The sand, which is cold and dry and is available on all parts of the world, dries out the moisture that accumulates around the ulcer or wound. This moisture prevents quick healing by natural means, especially in warm areas. Most ulcers and wounds are accompanied by a hot fever, which, when added to the irritant of warm weather, would only intensify the pain of those who are especially sensitive to heat. Since pure sand is cold and dry, more cooling than even the most effective medications for this purpose, the coolness of the sand will effectively pacify the warmth caused by the wound, especially when the sand is washed and dried. Pure sand helps dry out most harmful moistures and wetness, because it is a strong drying agent against the wetness that prevents quick healing, as we stated. Furthermore, pure sand helps cool the hotness in the ailing organ, which will strengthen its power of resistance (immunity) and thus end the pain by Allah's Leave.
The Hadith indicates that one should place some saliva on his index finger; then place it on pure sand, some of which will stick on to his finger. The finger should then be placed on the affected organ or the wound, and then one recites the supplication mentioned in the Hadith. This practice joins the blessings of mentioning Allah’s Name, relating all matters to Him and trusting in Him, adding both the cure and the supplication that will make the remedy even more effective.
There are two opinions regarding the Prophet's statement, تُرْبَةُ أَرضِنا "The sand of our land", if whether it entails the sand of the entire earth or just the sand of Madinah. There is no doubt that some types of sand are more effective remedies for various ailments than sand from other areas. Galinus said, "In Alexandria, I saw many people who suffer from severe dropsy and an ailing spleen, who use the sand of Egypt as ointment on their legs, thighs, hands, backs and ribs, and they used to benefit from this remedy.” He in addition said, ‘Hence this ointment (muddy sand) could help cure putrid and limp tumors.’ He continued, ‘I know of many people, whose bodies have swollen due to excessive bleeding, who benefited from using mud. I know of others who used it to cure terminal illnesses that attacked various organs, and the terminal ailments were eradicated".
Since various types of sands have a healing effect, what about the sand of the best and most blessed area on the face of the earth, especially when mixed with our beloved Prophet’s saliva? Added to these blessings is the supplication that Prophet Muhammad Sallallaho Alaihe Wasallam recited and in which he mentioned the Lord’s Name and related all matters to Him. We mentioned that the Ruqyah increases in effectiveness according to the strength of faith of the person who is reciting it and the response of the ill person to the Ruqyah. No sane, honorable Muslim doctor can deny this fact. However, if any of these qualities is absent, let such a person say whatever falsehood he wishes.