Sayyiduna Sa'd bin Abi Waqqas (may Allah be pleased with him) narrates a hadith in marfu' form from the Prophet (peace and blessings be upon him) concerning wiping over the leather socks: "There is no harm in wiping over the leather socks in ablution." (b) Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) was told this hadith by Sayyiduna Sa'd bin Abi Waqqas (may Allah be pleased with him), and Sayyiduna Umar (may Allah be pleased with him) said to Sayyiduna Abdullah bin Umar (may Allah be pleased with them both), as though rebuking him: Sa'd bin Abi Waqqas (may Allah be pleased with him) narrated a hadith to you and you did not act upon it. When Sa'd bin Abi Waqqas (may Allah be pleased with him) narrates a hadith to you, do not seek any other hadith beyond it.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 1276