Abu Abdullah Al-Sanabaji narrates that he came to Madinah during the caliphate of Abu Bakr Al-Siddiq (may Allah be pleased with him), and he prayed Maghrib behind Abu Bakr Al-Siddiq (may Allah be pleased with him). In the first two rak‘ahs, he recited Surah Al-Fatihah and one surah each from the short Mufassal surahs. Then, when he stood for the third rak‘ah—(Abu Abdullah says) I came so close to him that my clothes were almost touching his clothes—I heard him reciting Surah Al-Fatihah and this verse: “Our Lord! Do not let our hearts deviate after You have guided us, and grant us mercy from Yourself. Surely, You are the Bestower.” (Aal-e-Imran: 8)
Hadith Referenceمسند الإمام الشافعي / كتاب الصلاة / 144
Hadith Takhrijصحيح اخرجه مالك في المؤطا الصلوة، باب القرأة في المغرب والعشاء، وعبد الرزاق: 2698 - والبيهقي: 391/2، 64 وفى المعرفة السنن والآثار له (744).