Muhadith Nuri (may Allah have mercy on him) said narrating from Kafa'ami in his book "Baladul Ameen" that Imam Al-Mahdi (peace be on him) said:

Whoever writes this supplication in a new plate with Imam Al-Husein's soil (peace be on him) and later washed and drink it shall recover from his sickness.

بِسْمِ اللهِ دَوَاءٌ، وَالْحَمْدُ لِلّٰهِ شِفَاۤءٌ، وَلَاۤ اِلٰهَ اِلَّا اللهُ كِفَاۤءٌ، هُوَ الشَّافِيْ شِفَاۤءٌ، وَهُوَ الْكَافِيْ كِفَاۤءٌ، اَذْهِبِ الْبَاْسَ بِرَبِّ النَّاسِ، شِفَاۤءٌ لَايُغَادِرُهُ سُقْمٌ، وَصَلَّى اللهُ عَلٰى مُحَمَّدٍ وَاٰلِهِ النُّجَبَاۤءِ۔