Umar bin Abdul Aziz, may Allah have mercy on him, asked, "What is the second hadith?" He said, "Sanasaji informed me that he prayed behind Abu Bakr, may Allah be pleased with him, the Zuhr or Asr prayer, so in the first two rak'ahs he recited Surah Al-Fatihah and another Surah, while in the last two rak'ahs he recited Surah Al-Fatihah and completed the «ربنا لا تزغ قلوبنا» verse."
Hadith Referenceمسند عمر بن عبد العزيز / عمر بن عبد العزيز عن رجل / 81
Hadith Takhrij«حديث صحيح: موطا امام مالك ، الصلوة ، رقم: 171»