Sayyiduna Abdullah (may Allah be pleased with him) says: I prayed with the Prophet (peace and blessings be upon him) one night, and he (peace and blessings be upon him) kept standing continuously until I intended something bad. Abu Wa'il (may Allah have mercy on him) said: What did you (may Allah be pleased with him) intend? He said: I thought that I would sit down and leave the Prophet (peace and blessings be upon him).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4684