وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ زِيَادِ بْنِ أَبِي زِيَادٍ، أَنَّهُ قَالَ قَالَ أَبُو الدَّرْدَاءِ أَلاَ أُخْبِرُكُمْ بِخَيْرِ، أَعْمَالِكُمْ وَأَرْفَعِهَا فِي دَرَجَاتِكُمْ وَأَزْكَاهَا عِنْدَ مَلِيكِكُمْ وَخَيْرٍ لَكُمْ مِنْ إِعْطَاءِ الذَّهَبِ وَالْوَرِقِ وَخَيْرٍ لَكُمْ مِنْ أَنْ تَلْقَوْا عَدُوَّكُمْ فَتَضْرِبُوا أَعْنَاقَهُمْ وَيَضْرِبُوا أَعْنَاقَكُمْ قَالُوا بَلَى ‏.‏ قَالَ ذِكْرُ اللَّهِ تَعَالَى ‏.‏ قَالَ زِيَادُ بْنُ أَبِي زِيَادٍ وَقَالَ أَبُو عَبْدِ الرَّحْمَنِ مُعَاذُ بْنُ جَبَلٍ مَا عَمِلَ ابْنُ آدَمَ مِنْ عَمَلٍ أَنْجَى لَهُ مِنْ عَذَابِ اللَّهِ مِنْ ذِكْرِ اللَّهِ ‏.‏

Yahya related to me from Malik that Ziyad ibn Abi Ziyad said thatAbu'd-Darda had said, "Shall I not tell you the best of your deeds,and those that give you the highest rank, and those that are thepurest with your King, and are better for you than giving gold andsilver, and better for you than meeting your enemy and striking theirnecks?" They said, "Of course." He said, "Remembrance (dhikr) of Allahta ala." Translation Not Available

Book Ref: Muwatta Imam Malik Book 15 Hadith 496
Web Ref:  Muwatta Imam Malik Book 15 Hadith 24