Musnad Ahmad 30:1231

Abu al-Nadr and Ibn Abi Bukayr narrated to us, from Ibn Abi Dhi'b, from Sa'id al-Maqburi, from Sa'id ibn Yasar, from Abu Hurayrah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "No Muslim man makes the mosques his home for prayer and remembrance, except that Allah rejoices at him until he leaves, just as the family of one who is absent rejoices at their absent one when he arrives to them."