مصنف ابن ابي شيبه
Musannaf Ibn Abi Shaybah
سجود السهو والعمل في الصلاةProstration of Forgetfulness and Actions in Salah
في الرجل يصلي (فلا يدري) زاد أو نقصIf Someone Prayed but Does Not Know How Many Rak‘ahs He Prayed, What Should He Do?
Hadith 4466
٤٤٦٦ - حدثنا أبو بكر (حدثنا) (١) أبو خالد الأحمر عن محمد بن عجلان عن زيد بن أسلم عن عطاء بن يسار عن أبي سعيد الخدري قال قال رسول اللَّه ﷺ: "إِذَا شَكَّ أَحَدُكُمْ فِي صَلَاتِهِ فَلْيُلْقِ الشَّك وَيَبْنِ عَلَى الْيَقِينِ فَإِذَا اسْتَيْقَنَ التَّمَامَ رَكَعَ رَكعَةً وَسَجَدَ سَجْدَتْين فَإِنْ كَانَتْ صَلَاتُهُ تَامَّةَ كَانَتْ الرَّكْعَةُ وَالسَّجْدَتَانِ نَافِلَةً وَإِنْ كَانَتْ نَاقِصَةً كَانَتْ الرَّكْعَةُ تَمَاَمَ صَلَاتِه وَالسَّجْدَتَانِ (تُرْغِمَانِ) (٢) الشّيْطَانَ" (٣).
It is narrated from Hazrat Abu Sa'id that the Messenger of Allah, peace and blessings be upon him, said: When any of you has doubt about his prayer, he should remove the doubt and act upon what is certain. If he is certain that his prayer is complete, he should perform one rak'ah and make two prostrations of forgetfulness (sahw). If his prayer was already complete, then this rak'ah and the two prostrations will become voluntary (nafl). If his prayer was incomplete, then because of this rak'ah it will be completed, and the two prostrations will humiliate Satan.
