Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) says that the Prophet (peace and blessings be upon him) said: "Shall I not tell you of a night more excellent than Laylat al-Qadr?" Then he said: "Keeping guard in a land of fear, (where the guard) may not return to his family."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 18444