Reference : Hisn al-Muslim 1

الحَمْـدُ لِلّهِ الّذي أَحْـيانا
بَعْـدَ ما أَماتَـنا
وَإليه النُّـشور
Alḥamdu lillāhil-ladhī 'aḥyānā 
ba`da mā 'amātanā 
wa 'ilayhin-nushūr.

Praise is to Allah Who gives us life
after He has caused us to die
and to Him is the return.

Reference:
Al-Bukhari, cf. Al-Asqalani, Fathul-Bari 11/113; Muslim 4/2083

Chapter: When waking up