On the authority of Abu Hurayrah, the Messenger of Allah (peace and blessings be upon him) said: "The cat does not break the prayer, for it is among the furnishings of the house." (1)

33 - Chapter: The concession regarding the leftover water from a woman's ablution

370 - Abu Bakr ibn Abi Shaybah narrated to us, Abu al-Ahwass narrated to us, from Simak ibn Harb, from 'Ikrimah, from Ibn 'Abbas, who said: One of the wives of the Prophet (peace and blessings be upon him) performed a ritual bath in a large vessel, then the Prophet (peace and blessings be upon him) came to perform a ritual bath or ablution, and she said: "O Messenger of Allah, I was in a state of major ritual impurity." He said: "Water does not become junub." (2)

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(1) Hasan as a mawquf narration. 'Ubaydullah ibn 'Abd al-Majid was contradicted by 'Abdullah ibn Wahb, who narrated it from Ibn Abi al-Zinad as mawquf, and the hadith of Ibn Abi al-Zinad falls under the category of hasan.
It was also narrated by Ibn Khuzaymah (828), al-Hakim 1/254-255, and Ibn 'Adi in his biography of 'Abd al-Rahman ibn Abi al-Zinad in "al-Kamil" 4/1586, via the chain of 'Ubaydullah ibn 'Abd al-Majid. Ibn Khuzaymah cited his narration in the chapter on a cat passing in front of a praying person, saying: "If the report is authentic as marfu', for there is doubt in my heart regarding its being raised (to the Prophet)."
It was also narrated by Ibn Khuzaymah (829) from al-Rabi' ibn Sulayman: Ibn Wahb narrated to us, from Ibn Abi al-Zinad, as mawquf. Its chain is hasan. Ibn Khuzaymah said: Ibn Wahb is more knowledgeable about the hadith of the people of Madinah than 'Ubaydullah ibn 'Abd al-Majid.
It was also narrated by Ibn Khuzaymah (103) in abbreviated form as marfu': "The cat is among the furnishings of the house," from Muhammad ibn Yahya, from Ibrahim ibn al-Hakam ibn Aban, my father narrated to me, from 'Ikrimah, who said: Abu Hurayrah said: The Messenger of Allah (peace and blessings be upon him) said — and he mentioned it. Ibrahim ibn al-Hakam is weak.

(2) Sahih due to corroborating evidence, but with the wording: "Water is not made impure by anything." This chain is hasan. Simak is truthful with good hadith, though some of his narrations from 'Ikrimah contain inconsistency. This hadith of his has supporting evidence from other than Ibn 'Abbas.