Purifying a vessel licked by a dog seven times, the first of them with earth

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "The purification of your vessel, when a dog has licked from it, is that it be washed seven times, the first of them with earth; and the ruling for a cat is the same."
This hadith has a sahih (authentic) chain and is on the condition of Imam Bukhari and Imam Muslim, and the narrator Abu Bakrah is trustworthy and reliable.

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "The purification of a vessel, when a dog has licked from it, is that it be washed seven times, the first with earth; and for a cat (licking from it) it should be washed once or twice." The narrator Qurrah was in doubt (about the words 'once or twice').

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said about the cat: "(The vessel should be washed) once or twice." That is, if a cat licks from a vessel, washing it once or twice is sufficient.

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "The purification of your vessel, when a dog has licked from it, is that it be washed seven times, the first of them with earth." Then Sayyiduna Abu Hurayrah (may Allah be pleased with him) mentioned the cat; (the narrator says:) I do not remember whether he said once or twice. Nasr bin Ali says: I found in my father's book, in another place, that the narration about the dog is marfu' (the saying of the Prophet (peace and blessings be upon him)), while the narration about the cat is mawquf (the saying of the Companion).

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) regarding a cat licking from a vessel that he said: "It should be washed once or twice."
In the ruling of the Shari'ah, recourse to the hadith of Imam Malik bin Anas regarding the purity of the cat is established, and Allah knows best.