Sayyiduna Abu Hurayrah (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings be upon him) said: "May Allah have mercy on the man who gets up at night and prays, and wakes his wife too; if she refuses, he sprinkles water on her. And may Allah have mercy on the woman who gets up at night and prays, and wakes her husband; if he refuses to wake up, she sprinkles water on his face."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4644