Sahih Muslim 572l

Translation

The Messenger of Allah ﷺ said prayer and he omitted or committed (something). Ibrahim (one of the narrators of this hadith) said: It is my doubt, and it was said: Messenger of Allah, has there been any addition to the prayer? He (the Holy Prophet) said: Verily I am a human being like you. I forget just as you forget so when any one of you forgets, he must perform two prostrations, and he (the Holy Prophet) was sitting and then the Messenger of Allah ﷺ turned (his face towards the Qibla) and performed two prostrations.

Grades by grader

Other narrations of this report

Musnad Ahmad 4072al-Mu'jam al-Kabir (al-Tabarani) 9874al-Mu'jam al-Kabir (al-Tabarani) 9876al-Mu'jam al-Kabir (al-Tabarani) 9879al-Mu'jam al-Saghir 790Musannaf 'Abd al-Razzaq 3483

Narrators

1. 1
   ʿAbdullāh b. Masʿūd

   One of the earliest and foremost (al-sābiqūn al-awwalūn), and one of the leading scholars among the Companions; his virtues are manyd. 28 AH, or 32 AH, 33 AH
   عَبْدُ اللهِ بْنُ مَسْعُودٍمن السابقين الأولين ، ومن كبار العلماء من الصحابة ، مناقبه جمة
   عن
2. 2
   ʿAlqamah b. Qays al-Nakhaʿī

   Trustworthy (thiqah), firm (thabt), jurist, devout worshipperd. 61 AH, or 62 AH, or 65 AH, or 72 AH, or 73 AH, also said: 63 AH
   عَلْقَمَةَثقة ثبت فقيه عابد
   عن
3. 3
   Ibrāhīm al-Nakhaʿī

   Trustworthy (thiqah), except that he often narrates with omission of the Companion (irsāl).d. 94 AH, or 95 AH, or 96 AH
   إِبْرَاهِيمَثقة إلا أنه يرسل كثيرا
   عن
4. 4
   al-Aʿmash

   Trustworthy (thiqah), a retentive memorizer (ḥāfiẓ), knowledgeable in the recitations (qirāʾāt), scrupulous (wariʿ), but he practiced concealment (tadlīs)d. Abū ʿAwānah said, and ʿAbd Allāh b. Dāwūd: 147 AH. Wakīʿ said, and more than one: 148 AH. And al-Khaṭīb considered it correct. Also said: 145 AH
   الْأَعْمَشِثقة حافظ , عارف بالقراءات ورع لكنه يدلس
   عن
5. 5
   ʿAlī b. Mushir

   trustworthy (thiqah), with some odd reports (gharāʾib) after he went blindd. 189 AH
   ابْنُ مُسْهِرٍثقة له غرائب بعد ما أضر
   أخبرنا
6. 6
   Minjāb b. al-Ḥārith

   trustworthy (thiqah)d. 231 AH
   مِنْجَابُ بْنُ الْحَارِثِ ج٢ / ص٨٦التَّمِيمِيُّثقة
   حدثنا
7. 7
   Muslim

   Trustworthy (thiqah), a retentive memorizer (ḥāfiẓ), an imam, an author of compilations, knowledgeable in jurisprudence (fiqh)d. Muḥammad b. Yaʿqūb said: 261 AH, Makkī b. ʿAbdān said: 259 AH
   مُسْلِمٌثقة حافظ ، إمام ، مصنف ، عالم بالفقه

Who each narrator was and how reliable, from hdith.com

Latin names and English verdicts with a dotted underline are machine translations, not reviewed.