Abu al-Zubayr al-Makki (may Allah have mercy on him) narrates that he saw Sayyiduna Abdullah bin Umar (may Allah be pleased with them both): when he prostrated and raised his head from the first prostration, he would sit on the tips of his toes, and he would say: "This is from the Sunnah."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Abu al-Zubayr (may Allah have mercy on him) except Ibn Ajlan (may Allah have mercy on him), and no one from Ibn Ajlan (may Allah have mercy on him) except Sa'id bin Abi Hilal (may Allah have mercy on him), and no one from Sa'id (may Allah have mercy on him) except Khalid bin Yazid (may Allah have mercy on him); al-Layth (may Allah have mercy on him) is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 8752
Hadith Takhrij«أخرجه البيهقي فى «السنن الكبرى» برقم: 2781»