وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ زِيَادِ بْنِ أَبِي زِيَادٍ، مَوْلَى عَبْدِ اللَّهِ بْنِ عَيَّاشِ بْنِ أَبِي رَبِيعَةَ عَنْ طَلْحَةَ بْنِ عُبَيْدِ اللَّهِ بْنِ كَرِيزٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " أَفْضَلُ الدُّعَاءِ دُعَاءُ يَوْمِ عَرَفَةَ وَأَفْضَلُ مَا قُلْتُ أَنَا وَالنَّبِيُّونَ مِنْ قَبْلِي لاَ إِلَهَ إِلاَّ اللَّهُ وَحْدَهُ لاَ شَرِيكَ لَهُ " .
Yahya related to me from Malik from Zihad ibn Abi Ziyad the mawlaof Abdullah ibn Ayyash ibn Abi Rabia from Talha ibn Ubaydullah ibnKariyz that the Messenger of Allah, may Allah bless him and grant himpeace, said, "The most excellent dua is the dua on the Day of Arafa,and the best of what I and the prophets before me have said, is 'Thereis no god but Allah, alone, without partner.'" Translation Not Available
Book Ref: Muwatta Imam Malik Book 20 Hadith 951
Web Ref: Muwatta Imam Malik Book 20 Hadith 255