Musnad Ahmad 1205:3

Yunus narrated to us, he said: Layth narrated to us, from Ubayd Allah ibn Umar ibn Hafs ibn Asim ibn Umar ibn al-Khattab, from al-Qasim ibn Ghannam, from his grandmother, the mother of his father, al-Dunya, from her grandmother, Umm Farwah—and she was among those who gave the pledge of allegiance—that she heard the Messenger of Allah, peace and blessings of Allah be upon him, mention deeds, and he said: "Indeed, the most beloved of deeds to Allah, the Almighty and Majestic, is hastening the prayer at the beginning of its time."