The father of Hisham bin Urwah says: I went to Sayyiduna Mu'awiyah (may Allah be pleased with him). He said to me: "What became of the sword?" I said: "It is with me." He said: "I made it with my own hand." Sayyiduna Abu Bakr (may Allah be pleased with him) gave land to Sayyiduna al-Zubayr (may Allah be pleased with him), and I was the one writing it. Then Sayyiduna Umar (may Allah be pleased with him) came, so Sayyiduna Abu Bakr (may Allah be pleased with him) took the document and put it in a fold of the bedding. Sayyiduna Umar (may Allah be pleased with him) came in and said: "Were you busy with some matter?" Sayyiduna Abu Bakr (may Allah be pleased with him) said: "Yes." He left, then Sayyiduna Abu Bakr (may Allah be pleased with him) took out the document and I completed it.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب إحياء الموات / 11799