Musannaf Ibn Abi Shaybah

Hasan says about the person who abandons the Sa'i between Safa and Marwah that a sacrifice (dam) becomes obligatory upon him.

Hazrat Dawood bin Asim came for Hajj or Umrah and omitted the Sa'i between Safa and Marwah. Hazrat Ata said: "Offer a sacrifice," and Hazrat Tawus said: "Enter as one performing Umrah."

Hazrat Abu Ma'shar and Ibrahim state that if a pilgrim forgets to perform Sa'i between Safa and Marwah during Hajj, then performing (another) Hajj becomes obligatory upon him, and if he is performing Umrah, then he must perform (another) Umrah, and nothing except the Sa'i between Safa and Marwah will suffice for him.