Abu al-Aliyah (may Allah have mercy on him) says: Someone who heard the Prophet (peace and blessings be upon him) told me that he said: "Every surah has its share of bowing and prostration." Sayyiduna Anas (may Allah be pleased with him) asked: Who told you this? He said: I remember, and I also remember the place where he told me.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4695