Hadith 61

Bulugh al-Maram

Book 8: Marriage
وَفِي رِوَايَةٍ لِلْبُخَارِيِّ : { إِذَا أَطَالَ 1‏ أَحَدُكُمُ الْغَيْبَةَ , فَلَا يَطْرُقْ أَهْلَهُ لَيْلاً } 2‏ .‏
A narration by al-Bukhari has:

"When one of you has been away from home for a long time, he must not come to his family during the night."