10. Humayd ibn Ziyad has narrated from al-Hassan ibn Muhammad ibn Sama‘ah from Ahmad ibn al-Hassan al-Mithamiy from Aban from abu al-‘Abbas and ‘Abd al-Rahman ibn abu ‘Abd Allah who has said the following: “We heard abu ‘Abd Allah , saying, ‘ Al-Shuf ’ (one’s rights of pre-emption) is applicable only between two partners who have not concluded their partnership.’”