Musannaf Ibn Abi Shaybah

Hazrat Umar says that there is no harm in making up missed fasts of Ramadan during the ten days of Dhul-Hijjah.

Hazrat Ali (may Allah be pleased with him) says that whoever has to make up missed fasts of Ramadan should not observe them in the ten days of Dhul-Hijjah, because this is the month of rituals.

Hazrat Abu Hurairah says that give precedence to the obligatory act, and there is no harm in making up for it during the ten days of Dhul-Hijjah.

Hazrat Saeed bin Jubair and Ibrahim say that the obligatory (fast) will be given precedence, and there is no harm in making up missed fasts of Ramadan during the ten days of Dhul-Hijjah.

Hazrat Saeed bin Musayyib did not consider it objectionable to make up missed fasts of Ramadan during the ten days of Dhul-Hijjah.

Ibrahim says that there is no harm in making up missed Ramadan fasts during the ten days of Dhul-Hijjah.

Hazrat Ata, Hazrat Tawus, and Hazrat Mujahid say that you may make up the missed fasts of Ramadan whenever you wish. Hazrat Saeed bin Jubair says that there is no harm in this.

Hasan has considered it undesirable.