Hadith 8:2931
Abu Bakr narrated to us, he said: Abda narrated to us, from Hisham ibn Urwah, that his father used to say while he was performing sa'i between al-Safa and al-Marwah: "O Allah, this is one; if it is completed, Allah will complete it." And he had completed it.
حدثنا أبو بكر قال نا عبدة عن هشام بن عروة أن أباه كان يقول وهو يسعى بين الصفا والمروة اللهم إن هذا واحدا إن تما أتمه الله وقد أتم