صحیح ابن حبان
Ibn Hibban
كتاب الصلاة
Book of Prayer
باب سجود السهو - ذكر الخبر المدحض قول من زعم أن هذه السنة تفرد بها عبد الرحمن الأعرج
Chapter on Prostration of Forgetfulness - Narration refuting those who claim this practice was unique to Abdur Rahman al-A’raj
1 hadith
Hadith 2680
Sayyiduna Ibn Buhaina (may Allah be pleased with him) narrates: The Prophet Muhammad (peace and blessings be upon him) performed prayer. After completing two rak‘ahs, he stood up. When he was supposed to sit, we said "Subhan Allah," but he continued the prayer. When he finished the prayer and was sitting, he performed two prostrations of forgetfulness (sajda sahw).