Perform Ghusl before you leave your house (at your hometown) and say the following words:

Arabic

اَللّٰهُمَّ طَهِّرْنِیْ وَ طَهِّرْ لِیْ قَلْبِیْ

allahumma tahhirni wa tahhir qalbi

O Allah, (please) cleanse me, cleanse my heart,

وَاشْرَحْ لِیْ صَدْرِیْ

washrah li sadri

expand my breast,

وَ اَجِرْ عَلٰی لِسَانِیْ مِدْحَتَكَ وَالثَّنَآئِ عَلَیْكَ

wa ajri `ala lisani midhatika walththana'a `alayka

and let Your praise and eulogy flow out from my tongue;

فَاِنَّهٗ لَا قُوَّۃَ اِلَّا بِكَ

fa'innahu la hawla wa la quwwata illa bika

since indeed there is neither might nor power except with You.

اَللّٰهُمَّ اجْعَلْهُ لِیْ طَهُوْرًا وَ شِفَائً۔

allahumma ij`alhu li tahuran wa shifa'an

O Allah, (please) establish it as a means of cleansing and healing for me.