3 chains merged

Do you know that three (divorces) were treated as one during the lifetime of Allah's Messenger (ﷺ), and that of Abu Bakr, and during three (years) of the caliphate of Umar (Allah be pleased with him)? Ibn Abbas (Allah be pleased with them)

Abu al-Sahba' said to Ibn Abbas: Do you know that a divorce by three pronouncements was made a single one during the time of the Prophet (ﷺ), and of AbuBakr and in the early days of the caliphate of Umar? He replied: Yes.

"O Ibn 'Abbas! Did you not know that the threefold divorce during the time of the Messenger of Allah and Abu Bakr, and during the early part of 'Umar's Caliphate, used to be counted as one divorce?" He said: "Yes."