Dying upon the fitrah

If you take to your bed, then perform ablution, lie on your right side and then supplicate:

اَللّٰهُمَّ أَسْلَمْتُ نَفْسِيْ إِلَيْكَ، وَفَوَّضْتُ أَمْرِيْ إِلَيْكَ، وَوَجَّهْتُ وَجْهِيْ إِلَيْكَ، وَأَلْجَأْتُ ظَهْرِيْ إِلَيْكَ، رَغْبَةً وَّرَهْبَةً إِلَيْكَ، لَا مَلْجَأَ وَلَا مَنْجَا مِنْكَ إِلَّا إِلَيْكَ، آمَنْتُ بِكِتَابِكَ الَّذِيْ أَنْزَلْتَ، وَبِنَبِيِّكَ الَّذِيْ أَرْسَلْتَ

O Allaah, I submit my soul unto You, and I entrust my affair unto You, and I turn my face towards You, and I totally rely on You, in hope and fear of You. Verily there is no refuge nor safe haven from You except with You. I believe in Your Book which You have revealed and in Your Prophet whom You have sent.

Allaahumma 'aslamtu nafsee 'ilayka, wa fawwadhtu 'amree 'ilayka, wa wajjahtu wajhee 'ilayka, wa 'alja'tu dhahree 'ilayka, raghbatan wa rahbatan 'ilayka, laa maalja' wa laa manja minka 'illaa 'ilayka, 'aamantu bikitaabikal-lathee 'anzalta wa bi-nabiyyikal-lathee 'arsalta.

...If you then die, you will die upon the fitrah.