Bismillahi wa lajna wa bismillahi kharajna wa 'ala Rabbina tawakkalna
In Guds namn vi går in och i Guds namn vi går ut och vi tror på våran Herre.
In the Namn of Allah we enter, and in the Namne of Allah we leave, and we trust in Our Lord.
Reported by Dawud 5096
Denna hadith är svag och finns i forumet under du'a.
Then, al-Qahtaani brings a supplication for entering the home:
- 2 - "In the Name of Allaah we enter, and in the Name of Allaah we leave, and upon our Lord we place our trust." 
This hadeeth was collected by Aboo Daawood (#5096). It is dha'eef (weak, unacceptable) due to a broken chain of narration, as mentioned by al-Albaanee in his checking of Sunan Abee Daawood. Since some of the scholars accepted this hadeeth, let us look at the chain and then understand how it is broken from two angles, so as to be upon clarity.
Muhammad ibn 'Awf
Muhammad ibn Ismaa'eel ibn 'Ayyaash
Ismaa'eel ibn 'Ayyaash
Dhamdham ibn Zur'ah
Shurayh ibn 'Ubayd
Aboo Maalik al-Ash'aree (may Allaah be pleased with him)
The Prophet (sallallaahu 'alayhe wa sallam)http://www.bakkah.net/articles/Hisnul-Muslim-Qahtaani.htm