Musannaf Ibn Abi Shaybah

Hazrat Naeem bin Ziyad Abu Talha Anmari says that I heard Hazrat Nu’man bin Bashir saying from the pulpit of Homs that we used to pray with the Holy Prophet Muhammad (peace and blessings be upon him) on the twenty-third night of Ramadan until the first third of the night, then on the twenty-fifth night we prayed with him until half the night, and on the twenty-seventh night we prayed for so long that we feared that we might miss Falah. We used to call Suhoor "Falah."