This picture frame contains the Al-Fatiha. which means "the Opener/Opening".
It is the first chapter ("surah") of the Quran. It consists of 7 verses ("ayah") which are a prayer for guidance and mercy. Many homes will have a printed Quran but also frame and hang the Al-Fatiha as a reminder.
"Al-Fatiha" could refer to this surah being the first in the Quran, the first chapter recited in full in prayer, or the way in which it serves as an opening for many functions in everyday Islamic life. Some Muslims see it as referring to the ability of the verse to open one up to faith in God.