Abū Umāmah ibn Thaʿlabah reported it from his father... Similarly, it is mentioned in "al-Tahdhīb" with the narration of another group of trustworthy narrators other than Ṣāliḥ ibn Kaysān, and he said: "Ibn Ḥibbān mentioned him in (al-Thiqāt)." Accordingly, it is stated in "al-Taqrīb": "Truthful and reliable." I say: and he is in "al-Thiqāt" (7/18). Based on the aforementioned investigation, it becomes clear that the isnād is at least ḥasan, and Allāh knows best. Furthermore, the ḥadīth meets the criteria of al-Haythamī in "Majmaʿ al-Zawāʾid," yet he did not include it. Hishām ibn Saʿd narrated it from Muḥammad ibn Zayd ibn Muhājir ibn Qunfudh al-Taymī from Ibn Thaʿlabah al-Anṣārī from ʿAbd Allāh ibn Anīs al-Juhanī who said: The Messenger of Allāh (ṣallá Allāhu ʿalayhi wa-sallam) said: "Indeed, among the greatest of major sins are: associating partners with Allāh, disobedience to parents, and the false oath. No one swears a patient oath, inserting into it even the weight of a mosquito's wing, except that a black mark is placed in his heart until the Day of Resurrection." It was recorded by al-Tirmidhī (3023), al-Ṭaḥāwī in "al-Mushkil" (1/382), al-Ḥākim (4/296) - who authenticated it, and al-Dhahabī agreed with him - al-Bayhaqī in "al-Shuʿab" (4/218/4843), and al-Ṭabarānī in "al-Awsaṭ" (3261), and from him Abū Nuʿaym in "al-Ḥilyah" (7/327). Al-Tirmidhī said: "A ḥasan gharīb ḥadīth, and Abū Umāmah al-Anṣārī: he is Ibn Thaʿlabah, and his name is not known, and he narrated ḥadīths from the Prophet (ṣallá Allāhu ʿalayhi wa-sallam)."