Muwatta' Malik 3-68

Translation

Yahya related to me from Malik from Afif ibn Amr as-Sahmi that Ata ibn Yasar said, "I asked Abdullah ibn Amr ibn al-As and Kab al Ahbar about someone who was uncertain in his prayer, and did not know whether he had prayed three or four rakas. Both of them said, 'He should pray another raka and then do two sajdas from the sitting position.' "

Grades by grader

Other narrations of this report

Musnad Ahmad 11689Musnad Ahmad 11794Musannaf Ibn Abi Shaybah 4436Musannaf Ibn Abi Shaybah 4438Musannaf Ibn Abi Shaybah 4446Sunan al-Daraqutni 1397

Narrators

1. 1
   Kaʿb al-Aḥbār

   trustworthy (thiqah)d. 34 AH, also said: 32 AH, and al-Wāqidī stated it definitively, and al-Haytham b. ʿAdī, and Khalīfah b. Khayyāṭ, and ʿAmr b. ʿAlī, and more than one
   كَعْب الأَحْبَارثقة
   سألت
2. 2
   ʿAṭāʾ b. Yasār al-Hilālī

   Trustworthy (thiqah), excellent (fāḍil), a man of admonitions and worship.d. 94 AH, or 97 AH, or 103 AH, or 104 AH
   عَطَاءِ بْنِ يَسَارٍثقة فاضل ، صاحب مواعظ وعبادة
   عن
3. 3
   ʿAfīf b. ʿAmr b. al-Musayyib al-Sahmī

   acceptable (maqbūl)
   عَفِيفِ بْنِ عَمْرٍو السَّهْمِيِّمقبول
   عن
4. 4
   Mālik b. Anas

   The jurist (al-faqīh), the Imam of the Abode of Migration (Imām Dār al-Hijrah), the head of the proficient masters, and the foremost among the meticulous.d. 178 AH, or 179 AH
   مَالِكٌالفقيه ، إمام دار الهجرة ، رأس المتقنين ، وكبير المتثبتين

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

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