Musannaf Ibn Abi Shaybah 14573 — What to say when stoning the jamrah

Mughirah said: I said to Ibrahim: What supplication should I recite when I stone the jamrah? He said: Recite this supplication: "O Allah, make this Hajj an accepted Hajj and forgive sins through it." I said: Should I recite this supplication with every pebble? He said: Yes, if you wish.