Anas bin Maalik Radiyallahu'Anhu says:
"When Rasulullah Sallallahu 'Alayhi Wasallam went to bed, he recited this du'aa:Alhamdulillaahil ladhi at'a-manaa wa-saqaanaa wa-kafaanaa wa-aa-waa-naa-fa-kam mim-mal laa kaafiya lahu wa-laa mu-wiya.Translation...'Praise be to Allah Who gave us food and drink, provided us sufficiently, and gave us (a place for) shelter! How many there are who have neither a provider nor a shelterer!'
English reference: Book 38, Hadith 246
Arabic reference: Book 39, Hadith 259