A slave who falsely accuses a free person: how many lashes does he receive?

Ikrimah, who is the freed slave of Sayyiduna Ibn Abbas (may Allah be pleased with them both), said that it is reported from Sayyiduna Ibn Abbas (may Allah be pleased with them both) concerning a slave who slandered a free person. He said: He is to be given forty lashes.

Makhul and Ata said that Sayyiduna Umar and Sayyiduna Ali (may Allah be pleased with them both), these two, used to give forty lashes to a slave who slandered a free person.

Sayyiduna Abdullah bin Amir bin Rabi'ah (may Allah be pleased with him) said: Sayyiduna Abu Bakr al-Siddiq, Sayyiduna Umar bin al-Khattab and Sayyiduna Uthman bin Affan (may Allah be pleased with them), all of these men, did not flog a slave for slander except with forty lashes; then I saw them increase upon that.

Mutarrif said that al-Sha'bi said: He is to be given forty lashes.

Abu Ma'shar said that Ibrahim said: He is to be given forty lashes.

Qatadah said that Sayyiduna Ali (may Allah be pleased with him) said: That slave is to be given forty lashes.

The above statement is also reported from Sa'id bin al-Musayyib and al-Hasan al-Basri through this chain.

Yunus reports that al-Hasan al-Basri said: "He is to be given forty lashes."

Hanzalah reports that al-Qasim said: "He is to be given forty lashes."

Sa'id bin Hassan reports that Mujahid said: "Forty lashes."

Qays bin Sa'd reports that Tawus said: "This slave is to be given forty lashes."

Shu'bah reports: I asked al-Hakam and Hammad, and they both said: "He is to be given forty lashes."

Muhammad bin Rashid reports that Makhul said: "He is to be given forty lashes."